test trek domane al 4

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Trek Domane AL Disc 4 review: An astounding and affordable all-roader

Trek's new entry-level road bike combines an endurance fit with sporty handling and a whole bunch of versatility..

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I simply love that some of the most interesting and versatile road bikes on the market currently sit at the budget end of the spectrum. And that’s exactly the case for Trek’s new Domane AL Disc, an all-road-esq bike based around a budget-minded aluminium frame. 

Much like Trek’s more premium carbon fibre Domane offerings, this new aluminium version aims to offer plenty of versatility via combining (super-)wide tyre clearance with a comfortable fit and a sporty road-bike feel. 

Put another way, the new Domane AL Disc slips snugly in between two other aluminium drop bar bikes in Trek’s range. There’s the more expensive, road-focused, and performance-oriented Emonda ALR ; and there’s the road-leaning gravel bike that is the Checkpoint AL . And I truly believe a bike like the Domane AL Disc is the right choice if you can’t decide between these two. That of course assumes you can actually find one to buy. 

At our recent Field Test the Victorian High Country’s endless alpine roads and gravel paths were the perfect place to cap off our testing of Trek’s latest affordable road bike. Let’s dive in.  

Budget frame with all the right bells and whistles

Story highlights.

What: Trek’s new entry-level and versatile road bike. || Key updates: Overhauled geometry to match carbon version, wide tyre clearance, disc brakes, plenty of mounting points for accessories, 32 mm tyres as stock.|| Weight: 10.45 kg (without pedals, 54 cm frame size) || Price: US$1,600 / £1,350.00 /AU$n/a || Highs: Huge tyre clearance, unique geometry is great for the purpose, quite comfortable ride quality, easy to service and upgrade, rides lighter than it feels to pick up, Shimano Tiagra just works, rim width, quality thru-axles.|| Lows: Basic and heavy frame, making the bike tubeless requires new tyres and a handful of parts, extremely heavy wheels (especially given the bike’s price), handlebar drop shape is too compact.

Like the Checkpoint AL, the new Domane AL Disc is built with Trek’s Alpha 100-series aluminium. Trek has kept rather quiet about the specifics of this tubing, but effectively it’s the company’s most affordable material blend with simple straight gauge tubes and only minimal smoothing (or none at all) of the welds throughout the frame. 

However, while the material may be price-point-oriented, the general construction is still quite impressive. The tubes have been formed into shapes to closely mimic those of the carbon Domane, the top tube is curved and flattened, while the down tube is almost rectangular in shape. Meanwhile, the chainstays have been dimpled to the extreme in order to provide an elegant sufficiency of tyre clearance. 

Up front there’s a fork with carbon fibre blades, but the rest of its construction, including the tapered steerer, is aluminium. With a modest build the Domane AL Disc frame and fork aren’t light and you can expect the frame to be well in excess of 1,400 grams. And there’s just no pretending this is a lightweight road bike once you add in a budget-minded build, wide tyres, and disc brakes. 

Despite that basic frame construction I was left positively surprised. I had expected a frameset that did almost nothing to assist with ride comfort, and I was wrong. Instead the Domane AL Disc did a respectable job at numbing vibrations and taking the edge off larger impacts. 

A big part of that ride quality is the result of a frame that’s more flexible – this bike does have a little more sway in key areas versus more premium offerings. I didn’t find this to impact on handling, but along with the high bike weight it creates a ride that feels less eager to jump forward with bursts of power. 

As stock, the Domane AL Disc is fitted with 32 mm tyres, and without question, these go a long way to making the bike feel as smooth as it is. 

Impressively the Domane AL Disc can go wider again. Trek officially suggests the frame can fit 35 mm tyres front and rear, just shy of the 38 mm figure it achieves with the latest carbon Domane. But as usual, that quoted figure is on the safe side, so much so that I managed to fit measured 42 mm Continental Terra Trail tyres into the frame front and rear, and the only touching point was the Tiagra front derailleur. And I’d bet a new Shimano GRX front derailleur and matching offset crank would fix this clearance limitation. 

The wide tyre clearance is matched with some adventure-friendly mounting points. In addition to the regular two bottle cage mounts inside the frame, there’s a third mount under the down tube. There are mounts for a Bento-type bag on the top tube. There’s a rack mount at the rear in case you plan on commuting or touring. And there are mounting points for full-length fenders front and rear, with the rear using a removable seatstay bridge for a cleaner look in case you only ride in fine weather.

The frame’s front triangle features internal cable routing for a clean look, with those cables then being run externally past the bottom bracket. That bottom bracket is a standard 68 mm English threaded variant, while the regular round 27.2 mm seatpost with external clamp is equally as common and easy to upgrade. Huzzah! 

Another neat trick found on many of Trek’s bikes is a space in the left chainstay for an integrated “DuoTrap” speed and cadence sensor. It is, however, sold separately. 

High-end geometry 

Trek offers this bike in seven frame sizes, all of which feature a modern take on a relaxed endurance-type fit. The stack figures offer a less aggressive riding position without placing the handlebars excessively high to negatively impact handling. The reach figures are kept shorter than the status quo which only assists in a more casual fit that should feel comfortable for most and confident once off the tarmac.  

Much like Trek’s existing Domane carbon bikes , this budget model offers geometry designed around the use of larger 32 mm tyres which would otherwise raise the bike’s height. This is most evident by the significant 80 mm of bottom bracket drop, a figure that’s lower than many gravel bikes (including Trek’s own Checkpoint). 

I found that bottom bracket drop quite noticeable. Where it can feel like you’re sitting on top of a number of endurance-type road bikes, it actually felt like I was in this one. The whole bike just felt lower to the ground, more stable, and more confident through corners. And that lower centre of gravity also made the bike feel like it’s lighter than its actual mass. However, do be careful of the lowered pedal clearance through corners if you’re used to a taller-standing bike. 

The head angle (71.3º for a 54 cm size) is also more in line with what you’d expect of a stable gravel bike versus a road bike. However, Trek has matched this with a longer-than-most 53 mm fork offset which helps to speed up the handling. The result sees the trail figure – a good indication of how quickly the bike steers – kept closely comparable to sportier road bikes. For example, the tested 54 cm sample offers a 61 mm trail figure with 32 mm tyres. And despite its wider tyres and relaxed fit, this still feels like a road bike. 

That slack head angle, long fork offset, and 420 mm chainstay length all work together to elongate the wheelbase to over a metre. And while the trail figure may be quite sporty, there’s just no hiding the sheer amount of stability on tap here.

The Domane AL Disc loves to go fast, but it just needs just that little more forewarning to get it turning. This somewhat slower attitude is exactly what most newer riders need and the result is likely to be a safer-riding bike. Meanwhile, that added front centre length provides generous toe clearance to the front wheel. 

A weight that aligns with the price 

OK, so the new Domane AL Disc ticks a lot of boxes, but it’s worth reiterating that it’s most certainly made to a price, and the needle on the scale will attest to that. With the only carbon fibre on the entire bike found in the front fork blades, this Domane AL Disc 4 (US$1,600 / £1,350.00 /AU$n/a) test sample weighs 10.45 kg without pedals. That’s not at all a small figure for a road-going bike. 

Trek offers the same Domane AL Disc frameset in two cheaper models starting from US$1,050 / £800.00 / AU$1,400, however, both of those feature mechanical actuated disc brakes. Those in certain countries will have access to a model priced above the one I tested: the Domane AL Disc 5 which features Shimano 105 shifting and brakes and sells for US$1,800 / £1,600 / AU$n/a.   

As tested, the AL Disc 4 features a full Shimano 2×10-speed Tiagra drivetrain and matching hydraulic brakes. And while the groupset is fairly weighty, its shifting and braking performance far surpasses its price point. Shifts are positive, fast and consistent. The affordable components mean that upkeep isn’t painful on the wallet.  

Gearing wise there’s an 11-32T cassette at the back, with a compact (50/34T) crank on the front. This is plenty of range for general rolling hills, however there were times that I wanted an even lower gear for getting the weighty bike up excessively steep inclines. It’s worth pointing out that the more expensive Domane Al Disc 5 (with an 11-speed 105 groupset) comes with a 11-34T cassette, and I feel that size is a much better match to a bike rolling on bigger 32 mm tyres. Thankfully the stock Tiagra derailleur can handle an 11-34T cassette and so making the switch is a relatively low-cost upgrade.

The braking performance from the Tiagra hydraulic disc brakes leaves little to complain about. The light lever feel and clear power modulation are significant improvements over the mechanical brakes fitted to cheaper models in Trek’s range. I understand this will upset those who use mechanical disc brakes, but I believe this aspect alone is worth spending more for. 

The rest of the build comes from Bontrager, Trek’s own component and accessory brand. All the pieces proved to be well suited and reliable choices for the bike’s intended purpose. 

Clearly built to take a beating, the stock wheels are anything but light. I weighed them at 2,270 g for the pair (1,050 g front, 1,220 g rear) which makes them the heaviest road wheelset I’ve seen in recent memory. At the centre are basic cup-and-cone loose ball bearing thru-axle hubs (made by Formula) and straight gauge spokes. On the outside sit aluminium rims with a surprisingly modern 21 mm internal width and tubeless compatibility (required rim strips are sold separately). Weight aside those are two good things.   

Those wheels may be tubeless compatible, but the provided Bontrager R1 Hard-Case Lite tyres are not. These feature a wire bead construction, good puncture resistance, and also carry a fair bit of weight in the process (460 g apiece). A bunch of the bike’s testing was done with Continental GP5000 TL 32 mm tyres, and not only did these knock about 200 g from the bike, they provided a noticeably faster-rolling and smoother (as a result of the more supple tyre construction) ride.

I’d say keep the Bontrager tyres if you plan on commuting, touring, or gravel riding with this bike, but consider swapping them out to a more premium offering if you’re seeking speed on the road. 

Bontrager’s own alloy handlebar and stem work just fine, although much like I mentioned in our Field Test review of the Emonda SL 6 Pro , I did find that my wrists would contact the top of the handlebar when riding in the drops. Similarly, the provided aluminium seatpost is wonderfully reliable and easy to adjust, however it does nothing to aid in seated comfort. More comfort awaits through an upgrade to an intentionally flexible carbon seatpost.

Bontrager’s own saddle gave little to complain about with a non-offensive shape matched with a good balance of softness and support. And I quite liked the grippy, thick and rubberised bar tape used here.  

Finally it’s worth mentioning that the tested Domane AL Disc 4 is available in three frame colours, and even the boring black option isn’t so boring. Kudos to Trek there for keeping things fun for all. 

Make it what you want 

Trek doesn’t have a whole lot of competition in this space at the moment when you consider that enormous tyre clearance, accessible geometry, and the relatively affordable asking price. The obvious competitor is Giant’s Contend AR , a bike I’ve reviewed and praised highly before. There’s also the new Orbea Avant to consider (a bike I tried and failed to get for review). From there the list gets pretty thin, at least for now. I’m betting we’ll see many more options in this versatile all-road space follow in mid-2021.  

Despite its significant weight being a shock for the asking price, I really enjoyed riding this bike. It’s proof that good geometry and a decent ride quality matter more than anything else. So much so that I tried to buy the test sample with plans of maxing out the tyre clearance and building myself a go-anywhere thrasher drop-bar bike.

However, those plans were foiled as Trek desperately needed the bike back due to pandemic-based consumer demand. I’ve since heard from a few sources that demand is greatly outpacing supply for the new Domane AL Disc, and that leaves me feeling happy-sad. I’m happy knowing that many likely newer cyclists have already ordered this great bike, but sad to think that many others will miss out. 

For more information, visit www.trekbikes.com .

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2023 Trek Domane AL 4 Disc Review

Trek has been a leading manufacturer of high-quality bikes for over 40 years. With their latest release, the Domane AL 4 Disc, they have once again raised the bar for road bikes.

In this review, we will take an in-depth look at the 2023 Trek Domane AL 4 Disc, examining its features, performance, and overall value.

Whether you are a seasoned cyclist or just starting out, this bike has something to offer for everyone.

So, let’s get started and see what makes the 2023 Trek Domane AL 4 Disc stand out from the competition.

If you’re in the market for a new road bike, the 2023 Trek Domane AL 4 Disc might just be the perfect fit for you.

With its impressive features and sleek design, this bike is sure to turn heads on your next ride.

The 2023 Trek Domane AL 4 Disc is a high-performance road bike that is designed for endurance riding and long-distance cycling.

This bike features a lightweight and durable aluminum frame with a carbon fork for enhanced stability and control.

The Domane AL 4 Disc also comes equipped with a Shimano Tiagra drivetrain that provides smooth and reliable shifting, as well as hydraulic disc brakes for powerful and consistent stopping power in any weather conditions.

– Lightweight and durable 100 Series Alpha Aluminum frame with a carbon fork

– Shimano Tiagra 2×10-speed drivetrain featuring a 11-32t cassette and 50/34t chainrings for smooth and reliable shifting

– Hydraulic disc brakes for powerful and consistent stopping power

– Wide 700x32c Bontrager R1 Hard-Case Lite tires for added stability and comfort on rough roads

– Compatible with DuoTrap S for easy integration with your cycling computer

– Rack and fender mounts for added versatility

– Perfect for endurance riding, long-distance cycling, and commuting.

Frame and Fork

The 2023 Trek Domane AL 4 Disc boasts an 100 Series Alpha Aluminum frame with a carbon fork, making it both lightweight and durable.

The frame is designed with Trek’s Endurance Geometry, which provides a comfortable and stable ride, even on longer rides.

Brakes and Drivetrain

Equipped with Shimano Tiagra hydraulic disc brakes, this bike offers reliable stopping power in all weather conditions.

The 2×10 Shimano Tiagra drivetrain provides a wide range of gears from its 11-32t cassette and 50/34t chainrings for tackling any terrain, and the compact crankset makes climbing hills a breeze.

Wheels and Tires

The Domane AL 4 Disc comes with tubeless ready Bontrager Affinity Disc wheels and 700x32c Bontrager R1 Hard-Case Lite tires, which provide a smooth and stable ride on both paved and unpaved roads.

Additional Features and Conclusion

This bike also comes with a number of additional features that make it stand out from the competition.

The bike also has hidden fender and rack mounts, making it easy to add fenders for rainy day rides or racks for commuting.

Overall, the 2023 Trek Domane AL 4 Disc is a solid choice for anyone looking for a versatile and reliable road bike.

Whether you’re a beginner or an experienced rider, this bike is sure to impress.

Order online and have it shipped to your local dealer for final assembly!!

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Is Trek Domane AL 4 Disc A Good Bike? [Trek Domane AL 4 Disc Review]

Table of Contents

Trek Domane AL 4 Disc

• Price : $1915
• Wheels : 700c
• Tire : clearance 35c
• Drivetrain : 2 × 10

What we like about i t: Higher performance and faster pedaling the Trek Domane AL4 Disc with Shimano 2×10 drivetrain with efficient hydraulic disc brakes, undaunted even by the rigors of competition!

What don’t we like about it : It will be less quiet due to the efficient operation of the body.

Rating (4.7/5)

Introducrion

The trek brand with its race pedigree has led generations of champions to fulfill their dreams. And the newly launched classic endurance bike Trek Domane AL 4 Disc gives me enough expectation that it does better on a very good standard. Lighter and stronger 100 series alpha aluminum body combination Bontrager, 700x35c puncture-resistant tires, equipped with Shimano 2×10 speed combination Shimano Tiagra 4700, 50/34 crank drivetrain, and exclusive IsoSpeed damping technology takes you to ride faster and see more of the landscape.

You don’t need to worry if you can ride this great horse enough, all models are paired with specific size components. You can feel about tailor-made comfortable riding. Even though it is an endurance bike with a racing pedigree. If you want to know more about the riding experience, please stay tuned and subscribe, I will bring more reviews.

Learn More: Trek Domane AL 2 Review – Is It The New All-Rounder?

Road Riding

For the vast majority of Domane 4 purchasers, that heart-pounding excitement is probably not what they are currently looking for. We prefer to enjoy the more varied scenery that riding brings.

At the start of the ride, I straddled the bike that has a stiff 73.7° seat tube angle. This is relatively common for most road bikes, and I have to say it was an encouraging start for the novice. The road I chose to test the Bontrager 700x35c acceleration on was a multi-terrain stacked section of urban edge, not just smooth roads. This was evident as I passed through the more crowded lanes of downtown, and I didn’t fall behind most people by riding.

On the contrary, with the trail length at 59mm, the Domane seemed very agile in weaving through crowds and obstacles. The Shimano 2×10 drivetrain started quickly and I didn’t lose control of the bodywork for a short while. In addition, I don’t let that stop me from exploring the city. It’s important to know some of the bumpy brick-laying roads or cobblestone trails similar to an endurance course, which shows the domane’s strength.

I have to say that before the ride started, my knowledge of IsoSpeed carbon forks was lacking. Since I’ve been riding my trek top-fuel full shock for years, I thought that only a self-traveling model could handle the bumps efficiently. But as I followed the brick pavement along the riverbank and the cobblestone trails on both sides, the wide, perfectly coordinated fork flex ensured greater vertical agility. I didn’t feel the expected arm soreness and the bumps were handled very efficiently. In addition, besides my affirmation of IsoSpeed, I also noticed that the Domane design has a slight bend forward at the rear fork. This is more able to absorb road vibrations and protect the ride from fatigue.

Endurance Riding

For Domane’s outdoor rides, I wavered between gravel roads and classic tracks. In fact, from the bottom of my heart, I prefer the big hot gravel. But responsibly, I think the classic track is what shows its performance. Anyone familiar with this type of track knows that cobblestones, traps, and slabs are its characteristics and demand a high level of vibration filtering from the vehicle. The 100 series alpha aluminum frame is equipped with Bontrager, 60 tpi, 700x32c tires. It is more resistant to riding outdoors and can effectively resist the friction of some road bumps. Since we were not riding on gravel roads, some soft gravel roads are not as good as wider tires, such as the Marin DSX 2 series with 45c tires. But in terms of acceleration and launch response, it was certainly superior as well.

In terms of damping, as I described earlier, the Iso speed fork damping handles these frequent but not violent bumps very efficiently. I noticed the huge head tube at the front of the bike, which counteracts the vibrations through the built-in damping unit. So I think this is ingenuity that no other model can reach.

Also, on some of the rising climbs, I think the Shimano 2×10 speed far outperformed my city road riding, and it shined! Combining Shimano, and 50/34 crank technology, I was able to easily leave the competition behind and eat dust. And from my riding experience, you can challenge some low-difficulty forest road riding. After my 3h long ride, I burned through the Keenan 800CAL this weekend. Since the Bontrager Elite stem is compatible with installed Bluetooth speed and cadence sensors to connect to my phone, I look at every ride as a healthy workout and very purposeful.

Main Features

When we got this almost all-around enduro bike, I marveled at its texture of it. The seamlessly finished 100 series alpha aluminum body is almost carbon, and especially with this black domane I rode, I thought I was getting a lot of attention when I rode it. It’s a little bit of an eye-catcher.

Of course, in terms of outdoor friction resistance, I think the aluminum alloy balances light weight and sturdiness in one. In addition, because it is equipped with IsoSpeed damping so his head tube is huge for some bumpy rides or crashes caused by some sharp turns. This design can greatly improve the stiffness of the head tube and achieve precise handling. And I think it is also very necessary for the confidence of descending terrain.

I must also mention that for choosing a Domane, you can stop worrying about the limitations of body size. All models are paired with specific size components, such as stem, handlebars, and crank length. This is certainly the biggest help for riding comfort. In terms of detailing, such as efficient and neat internal alignment, both shifting and brakes are accessed through hidden alignment ports through the down tube five-way to the brake and shifting positions. Even when I’m in a hurry, I can effectively avoid the hose being dragged.

As I said, there’s nothing more inspiring than an easy start. Of course, the ease you can feel, besides the user-friendly frame geometry, is also inseparable from the steep 73.7° seat tube angle. It will make your sitting position closer to upright and you will be able to ride longer term.

In addition, if you are riding Domane, you will find that the steering is more responsive and the ride becomes sharper. Compared to the AL 2 of the same series, getting shorter on the wheelbase (59mm) will speed up this process. But you don’t need to worry too much about losing control at high speeds. The lower BB height (25.6cm) allows for a lower center of gravity when riding, allowing you to easily control the body. Don’t underestimate these geometry figures, just a small change will make a big difference to the ride.

Components and Specifications

Isospeed shock absorbing fork.

If you see the Domane series, you’ll understand what I’m talking about. Trek has incorporated more comfort into the Madone line. And in terms of damping, the Domane doesn’t passively change the shape or material of the geometry. Although I think that the 100 series Alpha aluminum has made a lot of efforts to absorb the vibration. But I still have to introduce the main character today – Isospeed damping.

Unlike the full-suspension line with full suspension, the IsoSpeed components are incorporated into a more massive head tube. In the process, the head tube is also reinforced. In addition, as with mountain bike fork and rear gut air pressure adjustment, this is extremely effective in increasing compliance for a smoother ride.

According to Trek, with this upgrade, the Domane can improve its suspension by 10% without sacrificing body control. The vehicle stays firmly on the ground during the ride, and there are no more of the old jitters that would bounce higher and higher the harder you pedaled on a classic track. You will still maintain an even forward direction.

Shimano Claris 2×10 Speed Drive train

I have to say, as much as I’d like to call the Domane an all-rounder, I still have to admit that the outdoor riding performance shines more than the inner-city commute. Like the Shimano Claris I’ve described, the 2×10 drivetraiin shows a lot of energy for some endurance rides.

Because of its wider gearing options, I know that most models are now subtracting from the drivetrain and favoring single-disc drives. But for endurance racing where the stamina has been preserved for a long time, I prefer 2x or 3x drivetrains.

You have to accept that it is not as quiet and easy to ride compared to a single-disc 1x drivetrain. But it must be admitted that at this price, you are buying a Shimano Claris-equipped race bike with a 2×10 drivetrain adapted to more difficult climbs.

Bontrager, 60 tpi, 700x32c

From the time I started riding the Trek Domane AL 4, it was obvious to me that it was more composed than the AL 2. This is due in large part to his wider 32c tires. Although it doesn’t handle air resistance as efficiently as the 28c, it can get you up to speed quickly.

Compared to many endurance bikes nowadays that opt for 40c or even bigger number tires, I think the Trek Domane AL 4 has been thought through more thoroughly. And because of the nature of the vacuum tire, coupled with the 60tpi density, when you ride outdoors, you don’t need to squeeze the tire too much even with drop-off drops. And when I ride on the forest road also do not need to worry about the risk of puncture. In addition, with the efficient operation of the Isospeed damping fork, and can be greater to absorb the vibration from the ground.

Other Versions Of Domane

The Domane AL 4 is not much different compared to the version of the Trek Domane AL 4 Disc. It continues the Domane classic. Because of my love for this series, I will compare this version of the AL 4 Disc in terms of several key values.

For a price in the frame of $2029, and regardless of whether the higher price can harness more components. From the drivetrain alone, the Trek Domane AL 4 Disc does have a richer tuning. But regardless of the brake components, both opt for more expensive hydraulic disc brakes. And both choose a 700x35c size on the wheelset, which neither sacrifices speed nor reduces friction for acceleration or outdoor riding.

I think this is an optimal size, so the Domane series carries thorough retention. In addition, both have a clear preference for the 100 series alpha aluminum combined with a carbon fork from the frame. So in terms of strength and lightweight performance, both are almost identical. Plus for trek’s unique Iso speed dampers added, it’s a faithful choice for endurance riding.

To sum up, I think we see more continuity in the version of Trek Domane AL 4.

What we like about it ?

• Classic endurance bike, you can hardly pick more flaws in the bar.
• In the face of a harsh riding environment, more abundant power support to take you farther to ride.
• Sharper tire components so you can quickly cross the speed limit.
• Lightweight but sturdy aluminum frame with a cost-effective carbon fork.
• Trek’s exclusive Iso speed shock absorbing fork makes your ride easier.
• Multi-size component options to give you the ability to create tailored needs.

What don’t we like about it ?

• Can’t do more within the existing price framework.
• No more beautiful colors to choose from.
• What is the tire size of the Trek Domane 4?

The tire size of the Trek Domane 4 is 700x35c.

• What is the Trek Domane 4 drivetrain?

The Trek Domane 4 drivetrain is Shimano 2×10 drivetrain.

• How do you recommend the Trek Domane 4 size chart?

The Trek Domane 4 size chart .

Comparison Table

Marin dsx fs vs trek domane al 4.

It’s a shame that the Trek Domane isn’t classified in this category compared to the recent gravel road bike craze. Compared to the Marin DSX FS that most people choose, the Domane’s 700x35c wheelset will accelerate and start faster than the Marin DSX. But in terms of grip, the Marin’s 45c is even better. Although this also means that it will struggle more against rising terrain. Without the exclusive IsoSpeed damping like the Domane, I don’t think the carbon fork material alone will provide much of a boost to a comfortable ride.

Also, if you notice the drivetrain piece of both, Domane’s Shimano 2×10 drivetrain is richer than the Marin DSX. Although for the novice, the single disc will be easier. But for more demanding terrain climbing, but also save you a lot of trouble to upgrade. In addition, the same hydraulic disc brakes take the two and played a tie in this aspect of braking.

All things considered, I think the Domane will be slightly better, both in terms of long-term riding considerations and in terms of its ability to adapt to more terrain.

learn more： Marin DSX 2 Review-Made for Fun Riding

BMC Roadmachine X AL, ONE vs Trek Domane AL 4

The slightly higher price of the BMC Roadmachine is a bit so unconscionable compared to the Domane, which can choose its component size. In addition, if you notice his huge wheelset, you will understand that the Roadmachine is designed to be more stable.

Whether in accelerated driving or climbing performance, I think the Domane 35c has more advantageous tires. Although in the drivetrain Roadmachine’s 2×11’s range of speed regulation will seem more abundant. But if riding in more demanding terrain, like more continuous ascending terrain or bumpy rock gardens, I don’t think you can ride farther and longer if you can’t have an IsoSpeed-damping fork like the trek exclusive. Although the seat tube angle of 74.0° gives the rider a more upright position. But without more technology, you’ll get bored quickly. All things considered, I would prefer the smarter domane.

learn more： BMC Roadmachine X Two Review – Taking You On The Ultimate Comfortable Road Enduro Ride

Bianchi Via Nirone 7 – GRX 400 vs Trek Domane AL 4

In comparing the Bianchi Via Nirone 7 with the Trek domane, it is clear that the Bianchi Via Nirone 7 is slightly better in terms of liveliness, though.

But comparing the components you will see that it is really hard to tell the difference between the two. With the same size 700x35c wheelset, with expensive hydraulic disc brakes, and the same 2×10 speed drivetrain range options.

I prefer the Domane’s optional component sizes when looking at the details. It is more user-friendly for the rider’s ride and has an exclusive IsoSpeed damping fork. Facing more bumpy terrain or difficult climbs, the Donmanecan handle more aggressively.

If you look at it from the perspective of choosing the best of the best, I would say domane is more appropriate.

Bianchi Via Nirone 7 Review – GRX 400 Review – Newest

Trek Domane AL 5 Disc vs Trek Domane AL 4

As much as I hate to admit it, it’s hard to be more innovative with the existing endurance bike framework. the Domane series’ unique IsoSpeed damping and the design of more size-selective components leave too much of a classic impression on me.

So much so that it’s hard for me to see more surprises in the Trek Domane AL 5, even though it’s already so good. It’s still a continuation of the classic: 100 series alpha aluminum with a carbon fork, 700x35c wheelset, and expensive hydraulic disc brakes. But on the drivetrain, he still made some upgrades to reach a value of 2×11 speed.

Compared to the Domane AL 4, the 2×10 drivetrain, not only is it an upgrade in components, but for the challenge of more difficult terrain, you can go completely further. So if you’re having a hard time deciding between the two, think about which step we as riders would prefer to take the challenge.

In case, the above comments are helpful to you, please remember to share the subscription. Have a great day!

Learn More: Trek Domane AL 5 Disc Endurance Bike Review– Would It Be The Endurance Bike You Want?

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2024 Trek Domane AL 2 Gen 4 review: Budget all-road

An impressively versatile and previously-loved bike now held back by a pursuit of aesthetic-led design.

As a tech editor, I’m often more excited to test entry-level bikes than those with sky-high prices. Sure, a 7 kg superbike built with scrap from a space program (not really) is a hoot to ride, but it’s the balance of budget and function that intrigues me so much more about the lower end. 

Here, the assumption is often that those new to cycling will start with such a lower-cost bike. These bikes can make or break the future growth of cycling, and my hope is that the person buying such a bike has a positive experience that encourages them to stick around the sport we love so much.  

That’s where the Trek Domane AL comes in. I tested the previous iteration (released for 2021) and found it to be one of the best entry-level road bikes available. It offered a welcoming fit and confident handling without feeling dull. It provided ample tyre clearance to be used as either a road bike or light gravel bike. It was simple to keep well-tuned. Most importantly, it was an entry-level bike that I truly enjoyed riding. 

And that brings us to the latest iteration of Trek’s best-selling road bike. On paper, the new fourth-generation Domane Al retains a lot of what I liked in its predecessor, but it, of course, introduces a few new twists to the proven recipe. This is a solid bike, but as you’ll read, it fails to impress like the previous version. 

The short of it:  Trek’s most budget road bike, revamped, and still with class-leading tyre clearance. Good stuff:  Room for 40 mm tyres has this one ready for the gravel-curious. Solid build kit and frame will shrug off loaded commuting and mixed surfaces. Ready for fenders and a rack. Welcoming geometry and comfortable touch points. Bad stuff:  Disc brakes make for a heavy bike, and the mechanical disc brakes here aren’t stellar. Heavy wheels and tyres make the bike feel more sluggish than it wants to be. Through-headset cable routing makes no sense on a bike with mechanical gears and brakes. Ultimately cheap gearing and brakes for a bike that, while Trek’s entry-level, isn’t as affordable as it should be.

The new Domane Al explained 

In its modern form, the Domane Al is a dropbar bike that blurs the line between being an endurance road and an all-road bike – the latter being a category of bike that is designed with the versatility to split its time across tarmac and well-kept gravel roads. And with official room to easily clear 38 mm tyres (I comfortably fit measured 41 mm rubber in my sample), it certainly has the tyre clearance to go off-road. Still, look to the gearing and geometry, and it’s clear Trek still intends this one first and foremost for those wanting a road bike (get a gravel bike if your ambitions are predominately focused on riding off-road). 

As Trek’s most affordable road offering, the Domane Al offers a base-level aluminium frame (100 series Alpha in Trek speak) with a handful of more premium features. Many of the tubes are formed into angular shapes to handle specific forces and/or offer a unique aesthetic flourish. For example, the top tube tapers from matching the oversized head tube to that of the comparatively slender seat tube. Meanwhile, the oversized down tube is anything but round in its profile. 

Shapes aside, the most obvious new fancy feature is seen with the oversized headset bearings that now house four gear/brake housings within it which are then fed into the aluminium frame or full carbon fork. That full carbon fork on all price points of the Domane AL is new, too, included in an effort to save weight. 

With such generous tyre clearance, the frame has room and provision for full-length fenders (via a removable seatstay bridge) – with them installed, you’ll still comfortably fit 35 mm rubber. There are mounts for a top tube bag, and a third bottle cage can be mounted on the underside of the down tube. 

Component fitments are kept joyfully regular with an English threaded bottom bracket shell, a 27.2 mm seatpost, an external seatpost clamp, and flat mount brake calipers. And in a first for Trek, and perhaps a first for a road bike of this price point, there’s a Universal Derailleur Hanger (UDH) – a now-standard concept from the mountain bike world that not only ensures you can buy a replacement derailleur hanger anywhere, it also means the frame is ready for newer T-mount type derailleurs (first seen with SRAM Eagle Transmission ).

However, there is one exception to easy component fitments, and that’s the cable routing through the headset – I’ll return to this. 

More quality features include a small adjustable chain-catcher that’s ready in case of a shifting mishap. And then the provided thru-axles offer a nice conical interface, with a removable handle that contains a 4 mm hex key for use across the bike (for adjusting bars, seatpost, etc.) 

I’m happy to say that Trek has made no changes to the geometry since the previous iteration. Across the seven sizes, the Domane AL is intended to put the rider in a more relaxed position than a race bike. The bike also balances a longer wheelbase for stability with relatively quick steering angles to keep it feeling zoomy (61 mm trail figure in a 54 cm with 32 mm tyres). And as Trek has done with Domane for a number of years, the bike sits comparatively low to the ground with a 80 mm bottom bracket drop in the assumption you’ll be running larger-volume tyres (32 mm as stock). 

If the parts dangling off it weren’t enough proof that this bike exists to hit a certain price point, then its weight certainly offers that confirmation. A 56 cm frame is quoted to weigh 1,518 g, while the matching carbon fork sits at 475 g. All told, the base-model Domane AL 2, as tested, strained my scales at 10.42 kg without pedals or cages, and while that’s far from light, it does shave about 200 g off its predecessor. 

As tested, the base-model Domane AL 2 (US$1,200 / €1,200 / £1,125 / AUD$2,000) is built with a mix of Shimano’s entry-level Claris components and a few even cheaper non-series bits for a 2×8 gearing setup. The Tektro disc brakes are of the mechanical kind with a design that pulls both brake pads simultaneously to clamp onto the disc rotor (a design concept shared with the more premium TRP Spyre brake). Meanwhile, Trek’s componentry house brand, Bontrager, is responsible for all the other pieces, including a gravel-inspired handlebar with a subtle amount of flare, a well-padded and welcoming short-nose saddle, and a simple but effective twin bolt alloy seatpost.

Potholes will be fearful of being hit by the Paradigm SL wheels, and the Bontrager R1 Hard-Case Lite wire-bead tyres that are ready to ride through a river of broken glass bottles. The build may be heavy, but it’ll take more knocks than a door. 

Step up to the Domane AL 4 at US$1,700 / €2,000 / £1,875 / AU$N/A and you’ll see the bike get a welcome upgrade to Shimano Tiagra 2×10 shifting and matching hydraulic disc brakes. Meanwhile, all the other bits are the same as the base model. This is the model I tested in the previous iteration and the one I sought to test again. Alas, it’s unfortunately not offered within the small island of Australia. As I’ll come to explain, this one is worth the extra expense if it’s available in your region. 

Finally, spending US$2,000 / €2,300 / £2,150 / AU$N/A gets you the Domane AL 5. This top-tier option has Shimano’s new 105 12-speed mechanical groupset , while the rest remains the same as above. 

Handling and versatility

Riding the Domane AL is a familiar and welcoming experience. Straight from the box, it offers a comparatively upright but not cramped riding position, and it can be easily (and cheaply!) tuned to offer a more leisurely or aggressive fit. 

The stock stem length (100 mm in the size tested) and new 80 mm reach handlebar left me without complaint, but my initial impressions were that it made the reach feel longer than expected, especially given how upright the position otherwise is. Those wanting a truly relaxed ride may need to swap out to a shorter stem length, while those wanting a truer road bike experience can use the 45 mm of stem spacers provided for fine-tuning the stem height.

I found my 54 cm Domane AL sample handled best with the handlebars lowered by 25 mm (lower handlebar height helps to put more weight on the front tyre and lowers your centre of gravity), however, what fits you best should be the priority. 

Either way, the Domane AL fits the way an endurance-type road bike should, and it’s a far more inviting experience for newer riders than bikes that try to mimic pure race bike geometry. It’s a fit that should have mountain bikers feeling at home, and likewise for those fresh to cycling. 

It’s easy to make a road bike stable, but make it too stable and the bike can become dull to corner with and a little lifeless in finding a rewarding flow. Trek’s proven geometry figures strike a nice balance between easy-riding stability and reactivity. The Domane AL has a longer wheelbase and slacker head angle to ensure it’s not nervous like a race bike, but then, a longer fork offset helps to reduce the trail figure for a ride that remains rewarding to dip into high-speed corners. 

In reviews, we often cover the ride quality of a frame (basically, how smooth the bike feels). The Domane AL is by no means a rattle-can like aluminium bikes of the distant past, but equally, its relatively basic tubing does mean you’ll feel the edge of larger bumps. However, so much of how this bike rides and handles is seemingly intertwined with the stock wheel and tyre setup, something I cover in the following section. 

As a budget offering, you can expect this bike to lack the same level of polish as more premium options. The welds are fairly consistent but aren’t made to look pretty. Likewise, the candy red paint (a black/grey option also exists) offers a premium look, but closer inspection shows it lacks a mirror polish. And then, every time I looked at the crooked Domane logo on the top tube I was further reminded that this was Trek’s budget offering. 

Regardless of how it rides, the Domane AL is certainly robust enough for thumping down a gravel road. Likewise, the room for actual 40 mm tyres means you can equip it for proper off-road use. However, like many road-going bikes, that larger tyre makes the gearing taller (harder), and therefore you’ll probably be wishing for easier gearing on loose steep climbs. Similarly, the frame geometry isn’t ideally optimised for such big rubber, and at least for smaller sizes, you’ll be hitting your toes against a wider front tyre (aka toe overlap) when turning at low speeds. Thankfully, no such toe overlap issues were present with the stock 32 mm tyres in the tested size 54 cm. 

When weight matters 

Physics tells us that the bike’s weight often makes a negligible difference to one’s speed. Still, one of the joys of a pure road bike is the whippy and reactive sensations earned through a light bike, and while it may not result in a huge difference in the Strava rankings, it sure can make a difference in how big of a grin you carry up the hill. 

It’s here where the Domane AL and its excess mass tend to disappoint. There’s no other way to put it, but in its stock form this bike just feels sluggish and hesitant to move. No doubt the basis for such blame comes from the disc brakes, a complaint that my colleague Caley Fretz recently articulated with his review of the more race-orientated Trek Emonda ALR . I won’t repeat that rant, but disc brakes carry increased cost and increased weight, and in an effort to save money, there’s an even bigger trade-off in the weight. However, this is an increasingly pointless argument as rim brake bikes become forever harder to find, and when you do find them, you can bet you’ll be limited to a far narrower tyre width. 

OK, so the new Domane Al is only available with disc brakes and that’s absolutely not going to change. Plus, those disc brakes are why this bike can fit gravel-sized tyres. Thankfully there is good news here as so much of this slug-like-biomimicry is simply related to the provided tyres and wheels. 

Weight is one negative to the stock Bontrager Paradigm SL wheels. Although more obvious was the penalty in rolling resistance and ride quality from the Bontrager R1 Hard-Case Lite wire-bead tyres (quoted and measured at 32 mm). Here, the provided tyres and wheels have the bike feeling more like an urban commuter than a sporty road bike, and one riding friend remarked that they noticed how suddenly slow(er) I was while testing this bike!

Swapping the wheels to some mid-priced Shimano 105 carbon wheels and performance-type 28 mm road tyres dropped an entire kilogram from the bike. More obvious than the weight was the night-and-day difference in the ride quality and rolling resistance. Suddenly the Domane Al felt like a road bike should – it was reactive to input and didn’t slow as noticeably when the road inclined. Equally, the wooden ride quality caused by the stiff tyres was now softened, resulting in a ride that simply felt smoother for an equivalent tyre pressure. 

Spending the value of a bike on wheels and tyres will of course always transform the ride. It’s often the best upgrade you can do to any bike, and that’s no different here. Even if the budget doesn’t allow for new wheels, changing from the stock 470-gram wire-bead tyres to a more performance-oriented folding tyre will significantly improve your average speed and feel on the bike. 

Now the stock wheels and tyres hold back the bike from being the road bike the Domane AL wants to be, but there are customers who they’re well suited for – notably commuters. Those with aspirations of riding to work during the week and enjoying the sights on the weekend will be well served by the stock wheels and tyres, just don’t expect to ride efficiently with them. 

Shifting, braking, and internal guidance  

Testing such budget bike models is always interesting – sometimes they pleasantly surprise me, other times I’m left wondering about particular specification choices. For the Domane AL 2, it’s a mix of both. 

Sitting below Sora, the Shimano Claris shifting is Shimano’s most budget dropbar option to earn an actual model name. If you were to compare it to Shimano’s mountain bike groupsets, you’d be looking at what used to be Acera (now replaced by CUES). It’s so budget, in fact, that Shimano only offers it in a mechanical brake configuration where it can be connected to rim brakes or as seen here, mechanical disc brakes. 

With both brake pads simultaneously clamping onto the disc rotor, in theory, the provided brakes are pretty good amongst a sea of ever-cheaper mechanical options. However, in practice, I was reminded once again just how stubborn the stock pads and rotor are to bed in for full power. The brakes were downright dangerous for the first 30 minutes of riding, and even once fully bedded in, the power was more comparable to a rim brake than a hydraulic disc brake system. 

While the braking power isn’t great, the Claris brake hoods are at least comfortable to hold. That’s a nice change from what the cheapest stuff used to feel like. Meanwhile, the shifting never failed to find the desired cog, but in doing so, it lacks the smoothness of Shimano’s 10-, 11-, and 12-speed shifting systems. The bigger bother was the square taper crankset that was flexy enough for me to hear the chain rub against the front derailleur when riding out of the saddle. 

Related, I found myself out of the saddle more often as the combination of the compact (50/34T) front gearing and 11-32T cassette don’t provide quite low enough gearing given the sheer weight of the bike and the larger 32 mm tyres. Adding salt to the wound, this gearing will only become a bigger issue if you choose to increase the tyre size further. 

One of our growing complaints with many modern road bikes is that the ever-increasing integration of components and hiding of cables has brought great complications to tuning how a bike fits and how easily it is serviced. Here, Trek at least gets the former right. 

The Domane AL now hides the cables through the headset but thankfully not through the handlebar or stem. As a result, there are no limitations or barriers to adjusting the height of the handlebars, the length of the stem, or the position of the saddle. All this stuff remains traditional and simple to swap and change – no advanced mechanical know-how or specialist tools are required. This semi-concealed design also means you can still box the bike for travel without much of a hiccup. Even better is that you’re unlikely to need to make any component changes as the provided parts offer a comfortable position straight from the box. 

OK, so that concealed cabling may look nice (that’s fundamentally its core purpose), but it absolutely introduces future servicing complications. Changing brake or gear outer cables is certainly more of a fiddle, but hardly a stress compared to the nightmare that will be incurred if you were to ever wear out or rust away a headset bearing that the fork steers on. Here, all the gear cables and brake cables will need to be disconnected (and likely replaced) along with the bartape in order to swap that simple bearing – a service that is likely to cost at least an extra hour of professional labour. 

Worse yet, the bearing durability is now compromised because the elements are welcome to enter through the holes for the brake and gear cables. Indeed a sweaty session on the indoor trainer or a soggy ride out on a gravel road will see contaminants begin to reach the final seals of those bearings. 

All of this is to say that I strongly believe clean aesthetics is not enough reason for brands to utilise concealed cabling on entry-level bikes – a complaint not at all exclusive to Trek. These lower-cost bikes don’t have wireless electronic gears, but rather still use mechanical gears that need smooth paths for the cables to flow. Meanwhile, the bike tested also has steel cables for the brakes, and you can bet that the marginally increased lengths of required cabling come at the cost of increased friction, greater cable compression, and therefore reduced brake efficiency. Hydraulic disc brakes help a lot here, but even then, you still have mechanical shift cables to weave. 

So what’s the answer? Well, you’re locked into this with the new Domane Al. It’s the one thing I think is an obvious (and significant) downgrade from the previous iteration of the Domane AL. And it’s one area where I think the new Specialized Allez Sport keeps things more practically modest (well worth consideration at this price point). Unfortunately for many at this price point, the effort of making such budget bikes look more premium comes at a practical cost, and Trek is joined by the likes of Orbea, Scott, and an increasing number of others in this trend.

The wrap 

Modern bicycles have improved in so many ways. The durability is impressive. The ability to run wide tyres for mixed terrain removes limitations of where and how you can ride your own bike. And no doubt, bikes are more ergonomic and better for the body than before. 

Still, I look at the combination of disc brakes and concealed cabling on a bike built with Shimano’s most entry-level gearing and can’t help but think how much better this bike could be if it had an even simpler frame and a decent rim brake. The braking would be comparable, it would be far lighter, and it would either be significantly cheaper or better equipped. 

Again, that’s not a complaint unique to Trek, but the base-model Domane AL 2 is a prime example of a bike that arguably lacks value where it matters. Indeed it’s a good bike in many aspects, but it carries a hefty asking price for a bike running shifting parts that previously came with bikes costing half as much just a handful of years ago. 

Spending more for the Shimano Tiagra-equipped Domane AL 4 immediately solves all of my issues related to the brakes and shifting. Still, it doesn’t solve for the sluggish tyres and increased complexity of the through-headset cable routing. Either way, if you do decide a Trek Domane AL is right for you, then just know that you’ll be at a speed disadvantage until you at least change the tyres. And as with any bike with through-headset cable routing, be prepared for bigger service bills through the ownership of such a bike. 

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• jamesthebikeguy
• Feb 23, 2023

2023 Trek Domane AL 4 - A Smooth and Comfortable Ride for Endurance Cyclists

2023 Trek Domane AL 4, a bike designed for endurance cyclists who value comfort and reliability. This road bike is built with Trek's proprietary Alpha Aluminum frame, which is lightweight and strong, and features a range of components from trusted cycling brands. Let's dive in and take a closer look at what this bike has to offer.

Design and Features

The Trek Domane AL 4 is designed with endurance cycling in mind, so its features are tailored to provide a comfortable ride over long distances. The bike's Alpha Aluminum frame is designed for durability and lightness, with internal cable routing for a clean look. The frame also features a tapered head tube, which provides extra stiffness and precise steering.

The Domane AL 4's fork is a Domane carbon disc fork with a tapered steerer tube, which provides excellent handling and stability. The bike's flat-mount disc brakes are a Shimano Tiagra hydraulic disc system, which provides reliable stopping power and excellent modulation in all weather conditions. The brakes are also designed with a flat-mount system, which makes them more aerodynamic and lightweight.

The bike's drivetrain is a Shimano Tiagra 4700 10-speed system, which is reliable and efficient, with a wide range of gears for tackling hills and descents. The Shimano Tiagra 4700 groupset also includes a compact 50/34 crankset and an 11-34 cassette, which is perfect for endurance riding.

The Trek Domane AL 4 also comes with Bontrager's tubeless-ready wheels and tires. The wheels are Affinity Disc, with 24 holes and a 21mm width, while the tires are R1 Hard-Case Lite, with a wire bead and 60 TPI, measuring 700x32c. The tubeless-ready system provides a smoother ride and reduces the risk of punctures.

Part specs:

Frame: Alpha Aluminum, DuoTrap S compatible, internal cable routing, flat-mount disc, 142x12mm thru-axle

Fork: Domane carbon disc, tapered steerer, flat-mount disc, 12x100mm thru axle Drivetrain: Shimano Tiagra 4700, 10 speed

Shifters: Shimano Tiagra 4700, 10 speed

Front Derailleur: Shimano Tiagra 4700, braze-on

Rear Derailleur: Shimano Tiagra 4700 Crank: Shimano Tiagra 4700, 50/34 (compact) Bottom Bracket: Shimano RS500, 68mm, threaded

Cassette: Shimano Tiagra HG500, 11-34, 10 speed

Chain: KMC X10, 10 speed

Brakes: Shimano Tiagra hydraulic disc, flat-mount

Wheels: Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21mm width, Presta valve Tires: Bontrager R1 Hard-Case Lite, wire bead, 60 TPI, 700x32c

Handlebar: Bontrager Comp VR-C, alloy, 31.8mm, 100mm reach, 124mm drop Stem: Bontrager Elite, 31.8mm, Blendr-compatible, 7 degree

Seatpost: Bontrager alloy, 27.2

Geometry and Fit

The Trek Domane AL 4's geometry is designed to provide a comfortable ride over long distances. The bike's Endurance geometry features a longer wheelbase and a more upright riding position, which puts less strain on your back and neck. The bike also features a slightly taller head tube, which helps to reduce the amount of stress on your hands and shoulders. This makes the Domane AL 4 a great choice for riders who want to spend hours on the road without sacrificing comfort.

The bike comes in a range of sizes, from 47 cm to 62 cm, so finding the perfect fit should be easy.

I highly recommend taking the time to get properly fitted before purchasing a new bike.

Ride Experience

So, how does the Trek Domane AL 4 ride? In a word, it's fantastic. The bike's IsoSpeed decoupler helps to smooth out rough roads and absorb vibrations, giving you a more comfortable ride. The bike's handling is smooth and predictable, and the hydraulic disc brakes provide excellent stopping power. The bike's Shimano Tiagra 10-speed drivetrain offers a wide range of gears, making it easy to tackle hills and descents with ease.

One thing to note is that the Trek Domane AL 4 is not a race bike. It's designed for endurance riding, so it's not going to be the fastest bike on the road. However, if you're looking to do longer rides, the bike's comfortable ride and reliable components make it an excellent choice.

Maintenance and Upgrades One of the great things about the Trek Domane AL 4 is that it's easy to maintain and upgrade. The bike's components are all from trusted brands, which means that you can easily find replacement parts if needed. The bike's frame is also DuoTrap S compatible, which means that you can add a wireless sensor to track your speed and cadence.

If you're looking to upgrade the bike, there are plenty of options available. You could upgrade to a carbon fiber seatpost to reduce weight and improve comfort or switch to a higher-end groupset for even smoother shifting. The bike's tubeless-ready system also allows you to upgrade to higher-quality tires for even better performance.

Overall, the 2023 Trek Domane AL 4 is a fantastic bike that offers a comfortable ride, reliable components, and a sleek design. It's an excellent choice for cyclists looking to take their riding to the next level and tackle longer rides. The bike's geometry and design are tailored to provide a comfortable ride, while the Shimano Tiagra groupset and hydraulic disc brakes provide reliable and efficient performance. If you're in the market for a new road bike, the Trek Domane AL 4 is definitely worth considering.

Actual weight

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The New Trek Domane: A Great Bike Made Better

The new Domane is everything great about the old bike, plus lighter and quicker.

The Takeaway: Trek’s best road bike gets faster, lighter, quicker, and better

• Frames are 300 grams lighter
• Slight aerodynamic improvements
• Compatible with any bar and stem

Price: $3,500 (SL 5) to $13,200 (SLR 9 eTap, tested) Weight: 19.7lb. (SL 5) to 16 lb. (SLR 9) 16.8 lb. as tested (SLR 9 eTap 52cm)

Trek Domane MK.4 Gallery

Trek Domane Generation Four—What is New

My biggest knock against the third-generation Domane was the weight. It was an excellent and feature-rich bike but a little hefty. So, I am happy to report that one of the most significant changes to the fourth generation frame is it is lighter by about 300 grams (more than half a pound. A large part of the weight savings came from simplifying the bike’s signature rear IsoSpeed Decoupler and eliminating the IsoSpeed Front system that debuted in the previous generation Domane.

When asked why Trek eliminated IsoSpeed Front, Jordan Roessingh, director of road bikes, stated that much of the system's benefit—which never offered the same compliance improvement as rear IsoSpeed—was made redundant by riders' increased adoption of higher volume tubeless tires run at lower pressures. Combined with the system’s weight penalty, Trek decided the juice was not worth the squeeze and punted IsoSpeed front into the dustbin of history.

Meanwhile, at the rear, Trek removed the adjustment from the SLR’s top tube IsoSpeed. All frames now have fixed compliance. Reggie Lund, a design engineer at Trek, said that it found, “A lot of our riders were never taking advantage of the adjustability on the previous generation bike,” so they decided to remove the feature which simplified and lighted the frame. Roessingh stated that the new Domane’s fixed compliance is in line with the previous generation SLR’s IsoSpeed set to the most compliant position.

SL-level frames also see a change to their rear IsoSpeed system. Trek has multiple iterations and generations of IsoSpeed. While third-generation Domane SLR frames had adjustable top tube IsoSpeed, third-generation Domane SL frames had non-adjustable seat tube IsoSpeed. SL and SLR fourth generation Domanes get the new non-adjustable top tube IsoSpeed.

Roessingh said that one of the drawbacks of the third-gen Domane’s non-adjustable seat tube IsoSpeed was that the system got more rigid as the seat tubes got shorter. In short, smaller and likely lighter riders experienced a rougher ride than larger riders. Top tube IsoSpeed eliminates this compromise and lets Trek tune compliance per frame size, said Rosseingh, so all riders experience similar levels of comfort.

Another signature feature of carbon framed Domane models that went to the dustbin was Trek’s No Cut semi-integrated seat mast. Instead, all models now use a seat post, although a proprietary D-shaped post instead of being round. Thankfully, Trek offers two lengths (280 and 320mm) and two offsets (five and 20mm) to help riders dial in fit. The seatpost clamp hides under a snap-on cover on the top tube, which helps clean up the lines of the new Domane.

Another way Trek cleaned up the Domane’s appearance is with a new stem with a cap that hides the hoses and housing before they enter the frame through the upper headset cover. But while the bike appears to have fully integrated routing, you can swap stem lengths without pulling the hoses or housing. The bike is compatible with a standard handlebar, and riders can use standard stems. However, if you want to install a standard stem, you will need to acquire a different upper headset cover from Trek, and you will probably want to zip-tie your hoses and housing together underneath the stem.

Trek’s Domane stem comes in sizes 60 to 130mm in minus-seven degree rise and 60 to 100mm in plus-seven degree rise. The faceplate features a single bolt mount for a computer/light/camera. Unfortunately, the Domane stem’s one-bolt mounting standard is different from Trek’s one-bolt mounting system for the Madone and Emonda and also different than any of the other stems with this feature (3T, Cervelo, Fizik, Specialized, Felt, Easton).

Trek also states that the new Domane is more aerodynamic than the previous generation due to the updated shape of the fork, downtube, seat tube, seat stays, and more-integrated cables in the front. However, Trek did not provide any data on the aerodynamic improvements. When I asked Roessingh for time or watt improvements, he told me, “I don’t think we have a specific claim other than saying we do know the bike is faster. But it’s not a huge amount so it’s not a claim we’re labeling as one of the headlines of the launch.”

One small new feature added to the Domane is a mount in the top tube for a feed bag. What has not changed is the Domane has clearance for up to a 38mm tire, hidden fender mounts, the threaded (T47) bottom bracket, and the in-frame storage accessed through the hatch in the downtube.

SL and SLR frames are compatible with mechanical drivetrains. But, there is a catch outlined in Trek’s FAQ, “The frame does not have a front derailleur housing stop, which means that you are limited to front derailleurs with a built-in stop, like Shimano toggle front derailleurs.” That means the frame is not compatible with SRAM or Campagnolo mechanical-shift drivetrains.

Trek Domane Four—SL Versus SLR

There are two grades of Domane frame: SL and SLR. According to Roessingh, “SL and SLR are essentially identical from a feature set perspective and frame shape perspective.” The biggest difference is the carbon: The SL uses Trek’s “500 Series” carbon while the SLR uses “800 series” carbon. That material difference results in a 200-300 gram reduction in frame weight. According to Trek, this puts the SL frameset at 2,500 grams and the SLR frameset around 2,200 grams.

Trek Domane Four—RSL for the Racers

Although Trek’s professional racers ride a Domane in some events, typically the cobbled classics, they do not ride the standard frame. Instead, they use the Domane RSL (Race Shop Limited). It is the frame ridden to victory in the 2022 Paris-Roubaix Femmes by Elisa Longo Borghini , and it has a few notable differences from the mainline frame.

The primary distinction is fit. The RSL fame is much lower and longer than the SL and SLR Domane. Using a 56cm frame as an example the RSL’s reach is 21mm longer (395 versus 347mm) while the stack is 43mm shorter (548 versus 591mm). The RSL also has a much shorter trail length (51mm compared to 61), likely because of the increased weight the RSL’s geometry places on the front wheel.

Other changes include eliminating the top tube bag mounts and in-frame storage hatch—you do not need those things when you have a fleet of team cars behind you—and the fender mounts. These changes help shave weight off the frame compared to the standard Domane. The RSL frame also has less tire clearance—its maximum tire width is 35mm instead of 38mm—but will fit larger chainrings (RSL: 2x 54/40, 1x 54T; SLR and SL: 2x 52/36, 1x 50T) than the SL and SLR models. Another noteworthy difference: The RSL is only compatible with electronic shifting.

Trek only offers the RSL as a frameset ($4,200) and only in sizes 52 to 60cm, four fewer sizes than the mainline frame. Claimed frameset (frame and fork) weight is 1600 grams for the RSL. On paper, that makes the RSL a whopping 600 grams lighter than the SLR. But when I fact-checked that weight delta with Roessingh, he told me, “The way we measure ‘frameset” weights in those metrics isn’t apples to apples. It includes a bunch of hardware and components. The RSL frame weight is only about 100g lighter than the SLR’s.”

Trek Domane Mk.IV—Geometry

Most of the Mk. IV Domane models carry forward the Mk. III’s endurance geometry with no changes. It is a shorter reach and a taller stack fit, with a longer wheelbase and mellower handling than a race bike. Trek offers nine sizes, from 44 to 62cm.

The RSL version previously mentioned features a lower and longer fit race fit that is even more aggressive than the Madone and Emonda race bikes with the brand’s H1.5 geometry. The RSL is only offered in five sizes, from 52 to 60cm.

Trek Domane Mk.IV—Builds, Prices, and Weights

Trek’s rolling out the new Domane with 11 models: five SL builds priced between $3,500 to $7,500 and six SLR models priced at $8,000 to $13,200. Only one model, the $3,500 SL 5, has a mechanical shifting drivetrain (Shimano 105); all the rest have electronic drivetrains from Shimano and SRAM. The SL 5 is also the only 11-speed bike; the rest are 12-speed.

All models come with Bontrager tubeless-ready wheels and Bontrager’s R3 folding-bead, tubeless-ready tires in 32mm.

Claimed weights start at 8.93Kg (19.7 lb.) for the SL 5, with the lightest complete bike coming in at 7.25kg (16 lb.). One interesting note on prices and weights: For the same relative equipment level— Ultegra Di2 versus Force eTap AXS —most Shimano-equipped bikes are less expensive and lighter than the SRAM-equipped bikes. There is a big “but” because all SRAM-equipped Domanes from the SL 7 eTap and up have power meters while the Shimano builds have standard cranks. The other exception is the SL 6 ( Shimano 105 Di2 ) and SL 6 eTap ( SRAM Rival eTap AXS )—the Shimano bike is $600 cheaper but slightly (10 grams) heavier.

As always, the Domane will eventually, though not immediately, find its way into Trek’s Project One customization program for riders who want to pick their parts and paint. Trek also offers the SL ($2,499), SLR, and RSL (both $4,200) framesets for purchase.

Trek Domane Mk.IV—Ride Review

Trek’s Domane has been a favorite of mine since the first generation, but the third generation was flat-out amazing. Comfortable, practical, and fun, it had most of the speed of a race bike without the bullshit that makes race bikes so limited and limiting. It fits big tires! You could run any bar and stem! It could store a burrito in the downtube! And it was fast .

So when Trek told me they were sending me the new, fourth generation, Domane I hoped and prayed that they found a way to make it better without messing up what made it so great. And friends, my hopes and prayers were answered because riding the fourth generation Domane was like reacquainting with a dear old friend, but one who lost a bunch of weight and now goes to therapy. Because this bike is everything the gen-three Domane was, but better.

You can read what I said about the third-generation Domane when I reviewed it and when I wrote it up as our 2020 Bike of the Year and take all of the good stuff and apply it to the new, fourth-generation Domane. But my complaints about it being a little heavy are gone. And with the weight reduction, the gen-four Domane unlocks new performance levels.

The biggest difference is the new bike is quicker, snappier, and just flies. When you hear someone talk about a comfortable road bike, it usually suggests a bike that is squishy and slow feeling. But when you get on a bike that is fast, quick, and communicative but also floats and coddles the rider like a newborn baby, well, that is a special bike. And that is what the new Domane is: Special. A great bike made better. A bike for the modern road rider: Freaking fast, wonderfully comfortable, and oh so practical.

A gear editor for his entire career, Matt’s journey to becoming a leading cycling tech journalist started in 1995, and he’s been at it ever since; likely riding more cycling equipment than anyone on the planet along the way. Previous to his time with Bicycling , Matt worked in bike shops as a service manager, mechanic, and sales person. Based in Durango, Colorado, he enjoys riding and testing any and all kinds of bikes, so you’re just as likely to see him on a road bike dressed in Lycra at a Tuesday night worlds ride as you are to find him dressed in a full face helmet and pads riding a bike park on an enduro bike. He doesn’t race often, but he’s game for anything; having entered road races, criteriums, trials competitions, dual slalom, downhill races, enduros, stage races, short track, time trials, and gran fondos. Next up on his to-do list: a multi day bikepacking trip, and an e-bike race. 

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• New Releases
• Announcement

Released September 7

Photo Credit: Trek

Price Range

$1,499–$2,629

700c Aluminum

Frame Material

Trek launched the all-new fourth generation Domane AL today, an aluminum road bike that offers lasting comfort, performance, and greater all-road versatility with a high-quality aluminum frame and new, lighter-weight design that far outpaces its price point.

Trek’s best-selling Domane AL got a comfort and versatility upgrade with bigger all-road tire clearance for capability on everything from pavement to gravel, clean and modern aesthetics, and integration typically found on higher-end bike models — all wrapped up in a lighter-weight package.

The highs and lows of this model family

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

🐐 Measurements listed in mm and degrees

Sep 7, 2023

Now on its fourth iteration, the Trek Domane AL is packed with updates, a lighter frame, and room for larger tires.

Read Review

Sep 7, 2023 · Calvin Zajac

Can the Trek Domane SLR 7 AXS Gen 4 prove to be the ultimate all-road bike and adventure buddy in our 2023 all-road group test?

Coherent and versatile concept

Very comfortable thanks to the inconspicuously integrated IsoSpeed system

Timeless look that you won’t get tired of looking at

Internally routed cables rattle loudly

Sep 7, 2023 · Alvin Holbrook

Big tire clearance and lower weight give the new Trek Domane AL generation 4 all-road bike credibility both on road and on dirt.

Right for any road

New 40mm tire clearance (as measured) lets riders comfortably venture from smooth pavement to bumpy backroads and most gravel trails.

Sleek aluminum meets lightweight carbon

The new Domane AL is around half a pound lighter than the previous Domane AL Disc model thanks to a newly redesigned 100 Series Alpha Aluminum frame and a new full-carbon fork.

Mounts for the essentials

Mounts for a top tube bag, rack, and fenders make Domane AL the ideal rig for everything from workday commutes to weekend group rides.

Modern handlebar, premium integration

Domane AL’s cockpit now features a modern road bar for improved ergonomics and control, with a shorter reach and 4mm flare between the hoods and drops. Plus, new hidden cable routing offers premium integration typically found on higher-end models.

Universal Derailleur Hanger (say what?!)

For the first time ever, Domane AL comes with a new thru axle for Universal Derailleur Hanger compatibility. This is the same UDH that comes on Trek mountain bikes, so riders can enjoy cross-category compatibility with all their favorite rides.

Comfortable geometry

Domane’s relaxed endurance geometry keeps riders in a more upright position for all-day comfort.

Browse all new releases

• Domane AL 4