trek alr 2021

Trek Checkpoint ALR 5 review – a confident, capable gravel bike

Trek's updated aluminum checkpoint is a surefooted, confidence-inspiring ride that's perfect for ruined back lanes, byways and well-laden travels.

BikePerfect Verdict

The reshaped Checkpoint frame neatly combines confidence-inspiring stability with a fun, engaging feel which goes well at all speeds on all sorts of surfaces. This might not be the lightest or fanciest build, but the key bits are great and the rest just quietly works.

Stable and predictable

Comfortable

Great shifting and brakes

Gearing a bit tall for the weight

Could use a dropper post

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The aluminium-framed ALR models sit at the bottom of Trek's Checkpoint range, with the lighter carbon SL and race-focused SLR bikes above, but in truth that's not a bad place to be. The ALR 5 gets a full set of excellent Shimano GRX components for the drivetrain and brakes, decent tires on tubeless-ready rims and lots of rack and fender mounts. 

The result is a surefooted, confident bike that's ready for exactly what Trek says it's for – gravel riding for fun, commuting or just general adventures. Which is pretty much what most people are after when looking for the best gravel bikes or best cheap gravel bikes .

Design and geometry

For 2023, the Checkpoint frame has seen some changes – basically it's got longer both in the front centre and the chainstays, and the stem is shorter to compensate. I tested a 58cm, and compared to the 2021 model it has 10mm longer chainstays, 20mm more reach and is 26mm longer overall. The 90mm stem and 60.9cm/41.1cm stack and reach figures keep the overall riding position fairly relaxed, with a usefully tall front end and slightly head-down, but certainly not front heavy, bias.

The head angle is the same as before at 72.3 degrees, presumably to keep the steering decently snappy, as is the bottom bracket drop at 7.4cm. 

This might be the 'poor man's' model with its humble alloy frame, but that doesn't mean it's unsophisticated. The various touring-friendly mounts are complimented by internally-routed cables that help a lot when strapping on frame bags or cages, as well as keeping them generally out of harm's way. I did find several of the bungs protecting the mounting/cable holes disappeared overboard on rough trails though, so if you want to keep filth out of your threads/frame you might want to stock up – or wind in some actual bolts where you can.

Components and build

Trek has spent the budget wisely here, speccing the excellent Shimano GRX shifters, levers and hydraulic brakes. The flat-fronted levers are particularly good for grip when it's rough, the shifts are always positive and the two-piston calipers are powerful and easy to modulate on the 160mm discs. Basically, the whole stop and go thing is covered perfectly.

Well, almost perfectly. The 2x11 drivetrain gives a very useable spread of ratios, but for the most serious off-road climbing it's a little high. At the top end it's good for 35mph before you spin out, which is great for the road and fireroad descents, but leaves the lowest gear (30/34t) slightly high for the steepest, techiest climbs. That's especially true if the bike's loaded up.

That's the lowest combination of ratios that will fit, though, so your options there are either to keep the bike as light as possible, fit a 1x crank and lose a fair bit of top speed, or get stronger...

The finishing kit is all in-house Bontrager stuff, and while it's all perfectly good they're pretty easy targets for weight loss upgrades. The Bontrager Elite Gravel bar is 44cm wide on this frame size with a good flare to the drops for extra leverage, and the comfy GRX hoods tilt inwards just enough to encourage a slightly elbows-out stance that's good for control.

The wheels – Switch hubs, 21mm wide Paradigm rims (the SL version on one end, presumably the front) and 24 spokes on each – are similarly utilitarian, being strong, middling for weight and entirely decent for the job. Wearing Aeolus XXX rim strips they're tubeless ready, and so are the Bontrager GR1 Team Issue tires, which is nice – in fact, Trek lists 6oz of its TLR sealant as a 'tire part,' so presumably consumer bikes are supplied already set, just as our test bike was.

The tires are predictable and confidence inspiring on the unusually dry terrain of our test period, as well as on tarmac both damp or dry, but are clearly not designed for mud. There's room in the frame for up to 45mm rubber should you want to go wider.

Oh, and while the front axle looks like you'll need to carry a hex key to get it out, the lever on the rear thru-axle actually pulls out to fit in either one. 

Performance

The Checkpoint has a confident feel – its length and reasonable heft keep it planted, while the steering is stable without being sluggish. It's the same whether you're on gravel or tarmac, and predictable in a friendly but not boring way. The chunky headtube and sizeable welded junctions do a great job of keeping it tracking where it's pointed in the rough.

Despite the chunky, almost box-section seatstays and generally rigid-feeling frame, it's comfortable for long rides, thanks to the high volume tyres, well-cushioned bar tape and a supportive, hammocky P3 Verse Comp saddle you really sit 'in'.

Get up some speed on gravel though and there's no disguising the aluminum build. By 30mph on a fireroad, your hands and feet are taking some serious vibes, and the chatter from sustained speed does reduce comfort. 

Switching to carbon at the bar (and at the Bontrager seatpost) would both increase comfort and reduce weight, and though I found the saddle supportive and comfy both for long rides and hard pedaling efforts, it does have steel rails – it's another easy and relatively cheap target for weight loss and vibe reduction.

Alternatively, if you want more speed whatever the trails do, fit the best dropper post that will suit the 27.2mm seat tube and reap the rewards.

Personally, I would have quite liked the shorter cranks of the smaller sizes instead of the 175mm GRX RX600s fitted here, which would allow an even lower BB for descending confidence, but that's really just preference. The 7.4cm BB drop is pretty low in the scheme of things, cornering feel is predictable, and ground clearance is good.

This is an extremely usable yet still very enjoyable bike. It nails that '2/3rds road bike, 1/3rd XC bike' feel that makes gravel bikes so good for so many things – commuting while avoiding the worst traffic, touring, exploring dilapidated rural lanes, getting in hard climbing efforts away from ANY traffic, or just generally getting out there and enjoying the view. 

It's comfortable and reassuring from the off whatever the surface, and the money's been spent in the right places – this is a really solid base for years of riding fun.

Test conditions

• Temperature: Rarely less than 20 degrees C and up to 35
• Conditions: Dry, hard and dusty with almost zero rain
• Trails: Mountain singletrack, bridleways, forest gravel and crumbling rural lanes

Tech specs: Trek Checkpoint ALR 5

• Price: $2,500 / £2,400
• Discipline: Gravel
• Frame size tested: 58cm
• Seat tube angle: 72.5°
• Head angle: 72.3°
• Effective top tube: 59.7cm
• Bottom bracket drop: 7.4cm
• Wheelbase: 105.8cm
• Reach: 41.1cm
• Frame: 300 Series Alpha Aluminium
• Tires: Bontrager GR1 Team Issue 40mm, Tubeless Ready 
• Drivetrain: Shimano GRX
• Sizes: 49, 52, 54, 56, 58 (tested), 61cm
• Claimed weight: 9.75 kg / 21.5 lb (56cm)

Steve is a highly experienced journalist and rider who's been involved with bikes of all kinds for more years than he would care to remember. Based in South Wales, he has mile upon mile of swooping singletrack, an array of plummet and winch descents and everything in between right on his doorstep.

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The New Trek Checkpoint Line Is For Gravel Riders of All Kinds

Updated geometry and differentiated models for speed, adventure, and all purpose riding

The Takeaway: A great bike gets better, with geometry updates suited to the evolution of gravel.

• Two centimeters longer reach and front center on all sizes
• One centimeter longer chainstays
• New race-oriented SLR platform
• Additional cargo mounts

Price: $12,000 (SLR 9, as tested) Weight: 17.8 lb. (Size 54cm)

Trek’s gravel loving Checkpoint is all new front to rear, with new geometry (covered below) and features for the ever-evolving world of gravel riding. That evolution is why Trek differentiated the three complete bike platforms—SLR, SL, and ALR—for different kinds of gravel riders. I go into more depth below, but the short version is: SLR = race; SL = all-around, ALR = utility.

Threaded T47 bottom brackets now grace all Checkpoint frames, but Trek has done away with the sliding dropouts found on the previous generation Checkpoint. All eight builds get gravel gearing and clutch-style rear derailleurs (Shimano GRX or SRAM eTap AXS), as well as 40mm tubeless ready tires and tubeless ready rims. All models, and all sizes, can fit up to 45mm tires with plenty of mud clearance; which means riders in dry conditions can fit in even bigger tires. If you choose, you can fit the Checkpoint with 650b wheels—all models and all sizes come stock with 700c wheels—which bumps tire clearance up to 53mm (2.1 inches).

In the press release, Trek makes mention of “ Émonda -inspired aero tube shapes,” without providing any wind tunnel data. My suspicion is the tube shapes do save a few watts, though Trek isn’t leaning into gravel aero as much as 3T does with its Exploro RaceMax .

Trek Checkpoint — Geometry

Geometry is where the new Checkpoint sees the biggest change. While there are three Checkpoint frame platforms (outlined below), all three share the same, all new, geometry (see table above).

The overall theme to the geometry updates is “more progressive.” Trek took a page from the mountain bike playbook and stretched all sizes of the frame’s reach and front center by about two centimeters. Trek now fits shorter stems and shorter-reach bars to mitigate cockpit length changes. Chainstays on the frame grow by a centimeter (now 435mm on all sizes). Trail is also longer (about six millimeters) even though head angles remain about the same—new fork offset is 45mm, old was 49mm—and wheelbase grows as well. Frame stack bumps up a touch too.

Jordan Roessingh, Trek’s director of road product, says the new geometry aids stability, “It’s a longer bike, so whether you’re doing long Unbound type stuff where you’re just pointing the bike straight or you’re doing high speed stuff on gravel descents in the mountains, we believe this geometry lends itself to confidence. Getting that wheel out in front of you also unweights it makes you feel a lot more confident when you’re doing steep technical stuff—you don’t feel like you’re going to go over the bar. That front wheel is really easy to unweight and allows it to roll over a lot more stuff.”

Roessingh further explained that the new geometry also reduces toe overlap on smaller sizes and allows them to approve larger tires sizes for smaller riders, “On the previous [Checkpoint] we had to limit our small frame size tire size recommendations to only 40mm. Not because the frame didn’t have the capacity for 45, but when you put a 45 it created too much toe overlap.” The issue here was government regulations that outline a production bike’s maximum tire overlap. But with the new bike’s longer front end every size can, officially, run up to a 45mm tire.

One note on the geometry: The new Checkpoint is not suspension fork corrected. However, the Checkpoint has a 1.5-inch lower fork steerer diameter, so you can fit the new RockShox Rudy , a Suntour GVX, or Fox AX, but doing so will raise the front end and slacken its angles.

Trek Checkpoint — Where is the Front IsoSpeed?

One surprising omission from the new Checkpoint is IsoSpeed in the front, a feature found in Trek’s Domane all road bikes . According to Roessingh, IsoSpeed on the front of a bike with big tires, “Doesn’t provide a sufficient gain in compliance to make a real difference to the rider because a [larger than 32mm tire] is such a dominant aspect of the compliance,” so it was left off the new Checkpoint. The benefit is a less complicated front end, and some weight savings.

Rear IsoSpeed continues on all models. Roessingh explains that it has more deflection than front Isospeed so it offers additional compliance benefit even with larger tires.

Trek Checkpoint — Three Frame Platforms

The new Checkpoint comes in three platforms: SLR, SL, and ALR. The top of the line SLR (super light race) platform is new to the Checkpoint line. Previously, Checkpoint topped out with the SL model. All the models have T47 threaded bottom bracket, internal hose and housing routing, 45mm tire clearance, frame bag mounts, fender mounts, and come in six sizes: 49 to 61cm. SLR and SL carbon frames get the same in-frame storage system found on carbon Domane frames.

But though the three platforms share geometry and many features, they’re tuned to suit different riders.

The SLR is race oriented, so it gets the highest-grade carbon composite, a traditionally shaped (not flared) road bar, and forgoes cargo mounts on the fork. This model also has Trek’s no-cut seat mast with (non-adjustable) top tube IsoSpeed.

The SL gets an all-purpose gravel focus. It uses lower grade carbon than the SLR but adds adventure riding features like three-pack mounts on the fork legs, and a flared gravel bar. This model does have Trek’s IsoSpeed decoupler in the seat tube but fits a traditional 27.2mm seatpost: That makes this model dropper-post compatible.

The aluminum framed ALR is the least expensive of the new Checkpoints, and Trek’s representatives expect this to be a popular model with riders looking for a commuter or utility bike. It has the same geometry as the other platforms, and the same rack, fender, framebag and mudguard mounts as the Checkpoint SL, and it gets a flared gravel bar and 27.2mm dropper-post compatibility. The two features it lacks relative to the SL are the in-frame storage and an IsoSpeed decoupler.

Trek Checkpoint — Models, Prices, Weights

There are eight complete bikes for the USA: one ALR, three SL, and four SLR models. Prices and claimed weights are below, with a quick look at the build kits. All complete bikes roll on Bontrager GR1 40mm tubeless ready tires, have tubeless ready rims, and ship with tubeless valves, rim strips, and sealant.

• Checkpoint ALR 5— $2,400, 21.5lb. Shimano GRX600 2x11 with 30/46 rings and 11-34 cassette
• Checkpoint SL 5—$3,200, 21.3lb. Shimano GRX600 2x11 with 30/46 rings and 11-34 cassette, Bontrager Paradigm SL wheels (21mm internal width)
• C heckpoint SL 6 eTap — $4,100, 20.0lb. SRAM Rival eTap AXS 1x12 with 40 ring and 10-44 cassette, Bontrager Paradigm Comp wheels (25mm internal width)
• Checkpoint SL 7 eTap—$6,3,00 19.6lb. SRAM Force Wide eTap AXS 2x12 with 30/43 rings and 10-36 cassette, Bontrager Aeolus Pro 3V carbon wheels (25mm internal width)
• Checkpoint SLR 6 eTap—$7,600, 19.1lb. SRAM Rival eTap AXS 1x12 with power meter, 40 ring and 10-44 cassette, Bontrager Aeolus Pro 3V carbon wheels (25mm internal width)
• Checkpoint SLR 7—$8,300, 19.4lb. Shimano GRX815 2x11 with 31/48 rings and 11-34 cassette, Bontrager Aeolus Pro 3V carbon wheels (25mm internal width)
• Checkpoint SLR 7 eTap—$8,300, 18.6lb. SRAM Force eTap AXS 1x12 with power meter, 40 ring and 10-44 cassette, Bontrager Aeolus Pro 3V carbon wheels (25mm internal width)
• Checkpoint SLR 9 eTap—$12,000, 17.9lb. SRAM Red eTap AXS 1x12 with power meter, 40 ring and 10-44 cassette, Bontrager Aeolus RSL 37V carbon wheels (25mm internal width)

Trek Checkpoint — Ride Impressions and Review

Trek sent me the top-of-the-line SLR 9 eTap AXS well ahead of the bike's launch, and I’ve done my usual “gravel” shenanigans on this bike—long gravel rides, mixed media rides, some road riding, and plenty of singletrack.

On anything dirt, and especially on singletrack, the new Checkpoint is not just better than the previous generation, it’s one of the best gravel bikes I’ve been on. I love the previous generations above-average comfort and smoothness and that’s still present, but the geometry updates make the new bike much more capable: And the faster and more technical the dirt, the more the geometry pays off. It’s accurate, but not darty, and composed but appropriately flickable.

Here’s the rub: Give us geometry that lets us go faster and…we’re going to go faster. The Checkpoint is so damn fast on downhills singletrack that I take issue with Trek’s decision to forgo front IsoSpeed or correct the geometry for a suspension fork. I mean, this is a pretty compliant bike overall, but when you go faster the hits get stronger. Many times I wacked stuff that made my hands and arms stung. Bigger tires help, but a 45mm maximum isn’t that big (Canyon’s Grizl fits 50s, for example).

Basically, there were times I felt like the geometry was writing checks the Checkpoint couldn’t cash without some help from suspension. But then, when you add weighty suspension and fatter tires, you have a much different bike; so I’m also not sure that’s the answer. I think we’re at a very interesting point with “progressive” gravel bikes where they are tickling the edges of mountain bike capability and, if they go much further, suspension must be a part of the conversation.

On the flip side of the new Checkpoint’s added capability, it feels less chipper on paved surfaces. The old Checkpoint was almost a road bike that could do gravel while the new one definitely takes cues from the world of mountain bikes. On balance, this works out okay for the most fun and challenging parts of gravel rides, though the Checkpoint bike feels a bit logy on the liaisons between the best bits. That’s a compromise I’m okay with, but if you want more quickness on pavement from your gravel bike you might be happier on something like a Cervelo Aspero 5 or the 3T Exploro Racemax .

Trek isn’t breaking any new ground with the Checkpoint’s geometry and handing traits. This mountain bike influenced longer, more stable, geometry (oh, hello, Chamois Hagar ) is an increasingly popular trend, and already found in bikes like Canyon’s Grizl (which the Checkpoint reminds me of) and some other bikes. I’m curious to see how this geometry goes down with the general riding public, and how far brands push the geometry. When used for actual gravel and off-pavement riding and racing, this geometry makes sense. But if riders are buying gravel bikes because they want more capability and comfort out of a drop bar bike, but are mostly sticking to pavement, I don’t think this geometry suits that kind of rider.

Handling covered, let’s look at the rest of the Checkpoint’s attributes. The added cargo options (in frame storage, direct mount bag in main triangle) are great, almost mandatory, features for a gravel bike. My 54cm frame did have two water bottle mounts on the downtube, but it required a bit of trial and error with a Wolf Tooth B-Rad base to get two bottles to fit comfortably. With the Bontrager frame bag mounted, I needed to reposition the seat tube cage location to fit a bottle. Larger sizes have more space in the main triangle, so this won’t be an issue, but riders on frames smaller than 54 might need to look into alternative ways to carry water if they run the frame bag.

I do have a gripe with the road-bend bar on the SLR models. Trek sees this model as appealing to racers who are coming from a road background. This is why it gets a traditional, and lighter, road bar. But it’s still a gravel bike, and flared drops are awesome for comfort and control. Besides, flared bars are so awesome that once you ride them, you’ll want to put them on your road bikes. Thankfully, Trek didn’t do anything weird with the bar and stem on the new Checkpoint, so riders can fit anything they desire.

That’s my only gripe though. I love this bike, and the rest of the parts kit is dialed. I’m going to throw out special kudos for spec'ing the SRAM-equipped SLR models with power meters from the factory. I think that’s perfectly in line with this bikes purpose and customer.

Overall, the new Checkpoint is a wonderful gravel bike. It’s faster, better handling, and more suited to the needs of the today’s gravel rider.

Trek Checkpoint SLR 9 eTap

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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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Trek Checkpoint ALR5 review

A fine all-rounder with special touches

Robert Smith / Immediate Media

Robin Wilmott

Fine frameset, good spec and great performance

It would be good to see bigger tyres fitted from new

Owing far more to the fantastic Boone and Crocket cyclocross bikes than Trek’s road models, the Checkpoint has all the bona fide features you would expect for a bike of this genre. There is also a feature you might not expect — adjustable rear dropouts to support singlespeed riders.

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Trek Checkpoint ALR5 frame and kit

My ALR5’s aluminium frame has classic looks with unfussy round or ovalised tubes, neat welds and glossy paintwork. It sports numerous mounts for racks front and rear, mudguards, options for one bottle-cage on the seat tube, two on top of the down tube, and one beneath it.

There’s neat internal cable and hose routing through the down tube via a single port, externally on the fork, and beneath the chainstays, and for those who think this bike has 21 gears too many, Trek’s adjustable Stranglehold dropouts allow conversion to singlespeed.

At first glance the barely more than 3mm gap between the left crank and chainstay could have been a concern, but it hasn’t proven to be.

For the dedicated gravelista, those same dropouts permit some wheelbase length alteration too, making room for bigger rubber — the ALR can take 45mm tyres — increasing stability, or keeping the rear-end tight.

In standard form, the ALR5 shares its chainstay length and wheelbase with the equivalent-sized Boone, has a slightly slacker seat angle and fractionally steeper head angle, with a shorter head-tube, longer effective top tube and lower bottom bracket.

All that boils down to a bike that, although not aimed at cyclocross-level technical riding, is quick over mixed terrain, and super-stable, making a solid platform to add some luggage to.

Trek Checkpoint ALR5 ride impressions

It shifts on tarmac, with 50psi in the 35mm Schwalbe G-One gravel tyres, clipping along at 18mph-plus wasn’t hard, and I pedalled away from a road bike or two.

Hitting the potholed, dirt road, the Checkpoint displayed ’cross-bike agility to carve lines around the worst obstructions, although its near-10kg weight almost grounded the first bunny hop I tried.

The ride quality is firm but well damped on rough tarmac, and much the same on hardpacked dirt or gravel. Although I’d rather see bigger tyres supplied, the relatively thin 35mm tyres, generous pressures and only limited assistance from the aluminium vibration-reducing, gel-padded bar and 27.2mm seatpost, mean seated comfort wouldn’t be a concern for lengthier rides.

The plush Montrose Comp saddle helps too. With heaps of flex from its surprisingly mobile shell, and a central cutout, it’s a good match.

The drivetrain is all Shimano 105, with the RS505 hydraulic levers and calipers stopping the bike effectively. A 50/34 compact chainset mated with 11-34 cassette gives good, closely spaced ratios in almost every circumstance, with a 1:1 lowest gear for big climb grinds.

The frame’s detailing is excellent, and even Bontrager’s TLR tubeless-ready wheelset feels quite willing in this build, but there is a maximum total weight limit, including rider and luggage, of 125kg.

They’ll never be a fast option, but the TLRs are pretty robust, versatile and will give good service. Turning them tubeless or replacing them with something friskier could turn a satisfyingly composed frameset into a contender for your do-it-all bike.

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2021 Trek road bikes - explore the complete range with our guide

Updated february 24, 2021.

While the US firm has a huge range that covers virtually all areas of cycling, Trek road bikes fall into three families: Madone, Emonda and Domane. There are also the Checkpoint gravel bikes and a couple of cyclocross models.

Madone has an emphasis on aerodynamic efficiency, Emonda is all about lightweight, Domane has a focus on comfort and ride quality and Checkpoint (disappointingly not Daemon to keep with the anagram theme) is for dirt roads and mixed-surface riding. There are many models at different price points within each of those categories.

Here are the highlights of the range available to UK consumers.

The Emonda (pronounced eh-mon-dah) is the lightweight Trek road bike and the carbon-fibre Emonda SLR and Emonda SL frames have had huge updates for the 2021 model year, whereas the aluminium Emonda ALR is unchanged.

The carbon-fibre Emondas are disc brake only platforms. You can still buy an Emonda ALR frameset that takes rim brakes, but complete bikes are disc brake only.

Back in June 2020, Trek announced new versions of both the Emonda SLR and the Emonda SL, adding features designed to improve aerodynamics for the first time, including tube profiles shaped to reduce drag.

Check out our news story on the launch of the new Trek Emonda SLR range here

The top-level Emonda SLR has a frame that weighs a claimed 698g, made from a new material that Trek calls OCLV 800 Series. The brand says that the Emonda SLR is 60 seconds per hour faster than its predecessor on flat roads, and 18 seconds per hour faster going up an 8% gradient (get details on those claims in our news story).

All of the Emonda SLR and Emonda SL bikes are now built to Trek’s H1.5 geometry, which is designed to be efficient while remaining accessible and comfortable for most riders.

New Bontrager Aeolus wheels and a one-piece Aeolus RSL VR-C handlebar/stem are central to the range.

Previous Emondas featured Trek's BB90 bottom bracket system with the bearings pressed into the BB shell, but all the new Emonda SLR and SL models use T47, which is a threaded design that the brand already uses on its Domanes.

The Emonda SL and SLR bikes have clearance for 700c x 28mm tyres.

There are five Trek Emonda SLRs in the 2021 range, starting with the Shimano Ultegra-equipped Emonda SLR 6 (£6,000, above).

The two top models in the Emonda SLR range, each at £10,700. The Emonda SLR 9 (above) is equipped with Shimano Dura-Ace components while the Emonda SLR 9 eTap has SRAM’s Red eTap AXS groups.

Buy if: You’re after a fast road bike with a focus on light weight… and now aerodynamic efficiency too.

The Emonda SL is identical to the Emonda SLR from a frame shape perspective; it uses the same tube profiles and the same geometry, the only difference being the composite used. Whereas the SLR uses 800 Series OCLV Carbon, the SL features 500 Series.

Reviewed: Trek Emonda SL 6 Pro 2021

This makes a significant difference to weight: the Emonda SL's frame is 1,142g and the fork is 380g – a total of 459g heavier overall.

The Emonda SL bikes also use a separate handlebar and stem rather than the one-piece Aelous RSL VR-C handlebar/stem.

There are five Trek Emonda SLs for 2021, ranging from the £2,500 Emonda SL 5 – with a mid-range Shimano 105 groupset – to £5,800 for the Emonda SL 7 eTap – that’s SRAM Force eTap AXS.

When we reviewed the £3,700 Trek Emonda SL 6 Pro (above) here on road.cc we said, “the latest iteration of the Trek Émonda focuses on aerodynamics more than ever before, which makes this SL 6 Pro one very quick and efficient road bike. The stiff frameset offers a firm yet fun ride, while the component choice keeps the weight down to exploit that stiffness on the climbs. It's a very good all-round package.

Read our Trek Emonda SL 6 Pro review

All of the SRAM-equipped Emonda SL and Emonda SLRs are fitted with Quarq power meters.

Buy if: You’re interested in a quick, lightweight road bike with the aero efficiency of the Emonda SLR at a lower price.

The Emonda ALR frame is among the very best aluminium options out there at the moment. Although the frameset is available in a rim brake version, complete bikes are disc brake only. Each of them gets a full-carbon fork.

There are thee rim brake Emonda ALR bikes in the range, each based on the same 300 Series Alpha Aluminium frame with virtually invisible welds and a tapered head tube that helps to provide accurate steering.

The Emonda ALR 4 is the cheapest model at £1,600. This gets you a Shimano Tiagra groupset with virtually everything else coming from Bontrager.

If you can afford more, the £2,000 Emonda ALR 5 is tempting with its Shimano 105 groupset. That looks a great buy.

When we reviewed a previous version of this bike we said, “The Emonda ALR 5 Disc is one of those bikes that manages to be greater than the sum of its parts. Check out the spec sheet and everything says that it should be solid, but the ride quality is comfortably above that. If you're expecting a harsh ride you're in for a lovely surprise here.”

Read our review of the Trek Emonda ALR 5

The Emonda ALR 6 (£2,450, above) shares the same frame, built up with Shimano’s second tier Ultegra groupset components.

Buy if: You want one of the best lightweight aluminium road bikes out there.

The Madone (pronounced mad-own) is a long-standing Trek road bike, although it has changed massively over the years. These days all of the Madones are high-end; you can’t get a complete bike for less than £4,600. They all use disc brakes (although you can still get your hands on a rim brake Madone SLR frameset).

The Madone range had a major redesign for the 2019 model year with the introduction of the top-end SLR models and a slightly more accessible SL version. That structure remains the same today.

Madones feature Trek’s adjustable IsoSpeed, a design that “maintains the diamond-shaped frameset geometry but ‘decouples’ the seat tube from the top tube, allowing the seat tube to flex with the forces of the road” (Trek’s words). The idea is that it smooths the ride, adding comfort and reducing fatigue.

The 2021 Madone SLR switches to Trek’s new OCLV 800 carbon material and layup, saving a claimed 80g over the OCLV 700 carbon used previously. Trek has also switched the Madone to the T47 threaded bottom bracket standard.

Find out about the changes has made to the Madone for 2021

The least expensive model is the Trek Madone SLR 6 at £6,900. It uses a Shimano Ultegra groupset and Bontrager’s 50mm deep Aeolus Pro 5 wheels.

The Madone SLR 7 (£8,250) takes you up to the electronic version of Shimano Ultegra while the Madone SLR comes with top-level Shimano Dura-Ace Di2 – but it’ll set you back £12,500.

There are two SRAM-equipped Madone SLRs. The Madone SLR 7 eTap (£9,050) has a Force eTap AXS groupset while the Madone SLR 9 eTap (£13,250, above) is fitted with top-level Red components.

Buy if: You want a top-level race bike and you have a lot of money to spend.

The Madone SL also offers adjustable top tube IsoSpeed although the frame is made using Trek’s OCLV 500 carbon fibre which is said to be a little heavier and less stiff than OCLV 800.

Whereas the Madone SLRs use aero handlebar and stem systems with internal cabling, the SLs are fitted with standard bars and stems with the cables running externally before entering the top of the head tube.

The Madone SL 6 (£4,600, above) is fitted with Shimano Ultegra components while the Madone SL 7 (£6,000) gets Shimano Ultegra Di2 electronic shifting.

The Madone SL 7 eTap is the most expensive model in the range at £6,600. This gets you a SRAM Force eTap AXS wireless shifting and a Quarq power meter

Buy if: You’re looking for a proven aero road bike that offers a smooth ride.

Trek broke new ground when introducing its IsoSpeed decoupler on the Domane (pronounced dough-mar-nay) endurance road bike back in 2012. Essentially, it’s a design that allows the seat tube to pivot relative to the top tube and seatstays, so the saddle can move downwards (and a little backwards), providing more give and adding comfort to the ride.

Then Trek introduced a front IsoSpeed system to some of its models in 2016 to increase comfort and control, and added adjustment to the rear IsoSpeed decoupler.

The Domane SLR features both adjustable rear IsoSpeed with the spring lever sitting under the top tube and front IsoSpeed.

“Front IsoSpeed, located at the top of the headset, is captured in a rocker cup similar to rear IsoSpeed,” says Trek. “This allows the flex of the steerer tube, providing additional compliance at the front of a bike. The rocker cup of the upper steerer has zero lateral movement, allowing the bike to steer and handle with precision.”

Find out more about the Trek Domane SLRs here

The Domane SLR is made from 700 Series OCLV carbon and Trek says that aero improvements over the previous model will save you the 12W at 25mph. The cables enter the frame behind the steerer to keep them out of the wind as much as possible.

Trek offers IsoCore bars, which feature an elastomer in the bar itself, and IsoZone kits which use gel/EVA padding under the bar tape.

The Domane SLR has a removable plate where the bottle cage sits; flip a lever and you can access space inside the tube. The cover has a multitool slot, and Trek also offers a tool roll specifically designed for the space.

The least expensive model is the Shimano Ultegra-equipped Domane SLR 6 AT £6,150. There are also Ultegra Di2 (£7,000) and Dura-Ace Di2 (£11,000) builds.

There are two SRAM models as well, each equipped with a power meter. The £7,650 Domane SLR 7 eTap has SRAM Force AXS components while the £11,200 Domane SLR 9 eTap (above) has top-level Red equipment.

Buy if: You’re after an endurance road bike that offers a really smooth ride.

The Domane SL features front IsoSpeed and non-adjustable rear IsoSpeed, and it’s made from Trek’s 500 Series OCLV, which isn’t as light as the 700 Series OCLV used for the Domane SLR.

Priced £2,325, the Domane SL 4 (above) is the most affordable model, featuring a mostly Shimano Tiagra groupset, including hydraulic disc brakes.

The £2,850 Domane SL 5 is a similar bike but with a Shimano 105 groupset.

The highest Shimano-specced model is the Domane SL 7 (£5,600), equipped with an Ultegra Di2 groupset and Bontrager Aeolus Pro 3 V Disc Tubeless Ready wheels.

The £5,650 Domane SL 7 eTap comes with SRAM Force eTap AXS wireless shifting and a crank-based power meter.

Buy if: You’re looking for a road bike with an endurance-friendly geometry and a smooth character

There are five aluminium Domane AL bikes for 2021, four of them with disc brakes and one with rim brakes. None of them have the decouplers found on the carbon-fibre models.

The most affordable model is the £695 Domane AL 2 (above). It's built to an endurance fit that's designed for comfort. The AL 2 is built up with a Shimano Claris 8-speed groupset.

For model year 2021 Trek has a new range of Domane AL Disc aluminium endurance bikes with claims of all-road suitability thanks to 35mm tyre clearance.

Find out about the new Domane AL Disc bikes here

These bikes are made using Trek's 200 Series Alpha Aluminium, rather than the 100 Series used for the AL 2. As well as a generous amount of tyre clearance, they come with mounts for mudguards, front and rear racks, three bottle cages, and a top tube-mounted bento box. They also have internal cable mounts.

The least expensive model is the Domane AL 2 Disc at £895, with a mostly Shimano Claris groupset. The Domane AL 3 Disc (£995) is equipped with 9-speed Shimano Sora, the Domane AL 4 Disc (£1,495) has 10-speed Shimano Tiagra, and the Domane AL 5 Disc (£1,775, above) is fitted with 11-speed Shimano 105 components.

Buy if: You’re after an endurance road bike that offers exceptional value for money.

Trek's 2021 range includes carbon and aluminium Checkpoint gravel bikes featuring the IsoSpeed decoupler from the Domane (see above), and with space for up to 45mm tyres, umpteen water bottle mounts plus mudguard and rack eyelets, 12mm thru-axles and flat mount disc brakes. Checkpoints cost from £1,700 right up to £5,100.

Trek first showed its cards with the Domane Gravel, a slightly modified version of the company’s endurance bike but with wider tyres. It's fair to say we were all a bit surprised by the effort, but it now looks like it was a stopgap for real gravel bike enthusiasts before the arrival of the company’s first dedicated foray into this growing category, the Checkpoint.

Compared to the Domane Gravel, Trek says the new Checkpoint offers much improved off-road capability and general versatility, with bigger tyre clearance, adjustable dropouts and geometry and lots of accessory mounts the key differences. Why they didn't just launch the Checkpoint in the first place is anyone's guess.

Read our first look at the Checkpoint range

Trek offers the Checkpoint in both an aluminium or a carbon-fibre frame. The carbon bikes have the IsoSpeed decoupler that Trek introduced on the Domane in 2012, while the aluminium bikes are rigid.

IsoSpeed is a mechanism that allows the top of the seat tube to move a little, independently of the rest of the frame, to provide a small amount of bum-cosseting shock absorption.

The top of the range is the Checkpoint SL 7 (above), which boasts a 1x (single chainring) SRAM Force/Eagle 12-speed groupset and hydraulic brakes for an RRP of £5,650.

The highest-specced Shimano model is the Checkpoint SL 6 (£3,600), with a GRX RX800 groupset.

"If you want a bike that is comfortable and provides space for wide tyres for mostly road riding, with lots of versatility whether for winter training and commuting or touring and bikepacking, the Trek is a good choice," we said in our review of a former version of the Checkpoint SL 6. "But it's not the most capable bike when the going gets rough and bumpy.

"Sure, the rear IsoSpeed decoupler works its magic, filtering out the harshness and giving your bum and back a smooth ride, but the front end is simply too harsh in comparison.”

We criticised Trek for not fitting wider tyres and a lower range drivetrain. However, the 2021 version has wider tyres (40mm rather than 35mm) and lower gear ratios.

Read our review of the Checkpoint SL 6

If you can live without carbon fibre and Isospeed, £2,150 gets you the Checkpoint ALR 5 (above) with Shimano GRX RX 800 and RX 600 components.

The least expensive bike in the range is the Checkpoint ALR 4 at £1,875 in a Shimano GRX RX400 and RX600 build.

Buy if: You want a gravel/adventure bike that's also capable of moving fast over asphalt.

We've mainly focused on Trek road bikes here, but the company also offers two cyclocross platforms: Crockett and Boone.

The Crockett frame is disc-specific and it’s made from 300 Series Alpha Aluminium. The Crockett 5 Disc (£2,050, above) comes with a largely SRAM Rival groupset, including hydraulic disc brakes.

Check out our review of a past Trek Crockett disc bike here

The Boone is made from 600 Series OCLV carbon fibre and, like the Crockett, it is disc-specific.

The £3,450 Boone 6 Disc (above) comes with a 1x Shimano GRX groupset – mostly RX800 although the hydraulic disc brakes are RX400.

Buy if: You want a cyclocross race bike with cross-specific geometry and gearing.

www.trekbikes.com

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The aim of road.cc buyer's guides is to give you the most, authoritative, objective and up-to-date buying advice. We continuously update and republish our guides, checking prices, availability and looking for the best deals.

Our guides include links to websites where you can buy the featured products. Like most sites we make a small amount of money if you buy something after clicking on one of those links. We want you to be happy with what you buy, so we only include a product if we think it's one of the best of its kind.

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Mat has been in cycling media since 1996, on titles including BikeRadar, Total Bike, Total Mountain Bike, What Mountain Bike and Mountain Biking UK, and he has been editor of 220 Triathlon and Cycling Plus. Mat has been road.cc technical editor for over a decade, testing bikes, fettling the latest kit, and trying out the most up-to-the-minute clothing. He has won his category in Ironman UK 70.3 and finished on the podium in both marathons he has run. Mat is a Cambridge graduate who did a post-grad in magazine journalism, and he is a winner of the Cycling Media Award for Specialist Online Writer. Now over 50, he's riding road and gravel bikes most days for fun and fitness rather than training for competitions.

Add new comment

11 comments.

Presumably the Speed Concept TT bike isn't a road bike? Really surprised this wasn't included.

• Log in or register to post comments

Good luck getting hold of one in 2021

Nice article, I even felt a vague stirring in the loins for the Madone which is quite something considering the rest of the range is as dull as dishwater. You're wrong about the pronunciation though, it's pronounced "Mad One" after the sociopathic bully who made the model famous.

I'm sure they're all great bikes, but why oh why do they have to be so ugly?

shouldnt that table title read  2018  trek  ?

john1967 wrote: shouldnt that table title read  2018  trek  ?

Yes, and now it does. Ta.

subtitle wrote: Everything you need to know before you buy a Trek

DaveE128 wrote: subtitle wrote: Everything you need to know before you buy a Trek

Ha! Now added that in. 

wingmanrob wrote: Yeah but they're Amercian Too bad they're not American. Stupid git.  

reliablemeatloaf wrote: wingmanrob wrote: Yeah but they're Amercian Too bad they're not American. Stupid git.  

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They shouldn't have to, but self preservation means it is often best to....

thanks for the ideas....

Indeed - but it's no more inconsistent than our current road design - very often UK high streets are "for shopping" and also a busy through route....

People who are subsidised* to make big holes in road (amongst other negative effects) complain about the holes in the road.  Same people also...

If you ask the world's leading economic commentators how many people have been rescued from abject poverty by capitalism the average answer would...

loads of parking

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Trek Domane+ ALR

• AUS $ NZD $ USD $ CAD $ GBP £ EUR €

Size / 49cm, 52cm, 54cm, 56cm, 58cm, 61cm

At a glance

Where to buy.

Specifications

• Frame 300 Series Alpha Aluminum, Fazua Evation integrated drive system, tapered head tube, internal routing, flat mount disc, fender mounts, 148x12mm thru axle
• Fork Domane+ carbon, tapered alloy steerer, flat mount disc, 12x100mm thru axle
• Motor Size: 49, 52, 54, 56, 58, 61, Fazua Evation 1.0, 250Wh; Size: 49, 52, 54, 56, 58, 61, Fazua Evation Drive Pack, 20mph max assist; Size: 49, 52, 54, 56, 58, 61, Fazua Evation touch remote; Size: 49, 52, 54, 56, 58, 61, Fazua Evation charger
• Battery Size: 49, 52, 54, 56, 58, 61, Fazua Evation 1.0, 250Wh; Size: 49, 52, 54, 56, 58, 61, Fazua Evation Drive Pack, 20mph max assist; Size: 49, 52, 54, 56, 58, 61, Fazua Evation touch remote; Size: 49, 52, 54, 56, 58, 61, Fazua Evation charger
• Wheels Bontrager Paradigm Comp 25, Tubeless Ready, 25mm rim width, 100x12mm thru axle
• Tires Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c
• Chain Shimano 105 HG601, 11 speed
• Crank Size: 49, 52, FSA Alloy for Fazua, 50/34 chainrings, 170mm length; Size: 54, 56, FSA Alloy for Fazua, 50/34 chainrings, 172.5mm length; Size: 58, 61, FSA Alloy for Fazua, 50/34 chainrings, 175mm length
• Front Derailleur Shimano 105 R7000, braze-on
• Rear Derailleur Shimano 105 R7000, long cage, 34T max cog
• Shifters Size: 49, 52, Shimano 105 R7025, short-reach lever, 11 speed; Size: 54, 56, 58, 61, Shimano 105 R7020, 11 speed
• Brakeset Shimano 105 hydraulic disc, flat mount
• Handlebar Size: 49, 52, Bontrager Comp VR-C, alloy, 31.8mm, 100mm reach, 124mm drop, 40cm width; Size: 54, 56, Bontrager Comp VR-C, alloy, 31.8mm, 100mm reach, 124mm drop, 42cm width; Size: 58, 61, Bontrager Comp VR-C, alloy, 31.8mm, 100mm reach, 124mm drop, 44cm width
• Saddle Bontrager Arvada Comp, steel rails, 138mm width
• Seatpost Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length
• Stem Size: 49, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: 52, 54, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: 56, 58, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length; Size: 61, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length
• Headset FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom

Q: How much is a 2021 Trek Domane+ ALR?

A 2021 Trek Domane+ ALR is typically priced around $4,599 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: Where to buy a 2021 Trek Domane+ ALR?

The 2021 Trek Domane+ ALR may be purchased directly from Trek .

Q: What size 2021 Trek Domane+ ALR should I get?

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• Rider Notes

2021 Trek Émonda ALR 5

An aluminum frame race bike with upper mid-range components and hydraulic disc brakes.

Manufacturer Price

For This Bike

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Based on frame geometry and build specs.

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Émonda ALR 5

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

4'11" – 5'3"

5'1" – 5'5"

5'3" – 5'7"

5'5" – 5'9"

5'8" – 6'0"

5'10" – 6'2"

6'0" – 6'4"

6'2" – 6'5"

• 6'0", size 58cm, Just right
• 6'4", size 60cm, Just right

Oct 2022 · Warren Rossiter

A climb-friendly bike with aero styling

Snappy handling

Fast to respond through the pedals

Power meter included in a fine package

Faster tyres would enhance its ride further

Read Review

Apr 2022 · Stu Kerton

The Émonda is a classic all-rounder, fun, fast and stiff, although this model isn't the lightest

Internal cable routing gives a very clean look

A great all-rounder

Good finishing kit

Not exactly light

Aug 2020 · James Bracey

Trek's latest GC/climbing bike has undergone an aero transformation, but has it helped?

Efficient power transfer

Excellent handling prowess

Compliant ride

New SL frame has lost some of the excitement of the existing Émonda

Heavy for a 'climbing' bike

Jul 2020 · Dan Cavallari

OCLV 800 launched with Trek's feathery Émonda, but now the brand's flagship aero bike gets this lighter, stiffer carbon — along with a T47 BB.

Have you seen Bontrager’s new Aeolus carbon wheel lineup? Spanning the gap between budget and race ready, the aerodynamic hoops are the perfect complement to another new Trek product launching today – the all new Émonda. Fans of super light, efficient climbing bikes needn’t worry. The Émonda is still as light as ever, but now […]

Mar 2019 · Philippe Tremblay

Sleek looking and smart riding sparkling purple frame makes a strong case to build a dream machine with an aluminium frameset

A smooth and stylee aluminum road bike that hauls ass at a great price

Aug 2018 · Benjamin Topf

The Trek Émonda ALR 6 is the highest-quality aluminium racer in Trek’s portfolio, but can the performance keep up with the superb looks?

Last updated April 22 Not listed for 1,094 days

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