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NEW 2021

Checkpoint ALR 4

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$1,699.99 Model 32556

Checkpoint ALR 4 is an aluminum gravel bike that offers an incredible amount of capability for the price. It's built for the rigors of gravel and dirt roads, but it's also right at home on morning commutes and centuries. This bike knows no boundaries, which makes it the ideal gateway to adventure on any road or path.

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It's right for you if...

You want a single durable, ultra-versatile gravel bike that's ready for adventure. Gravel? Check. Pavement? Check. Multi-day bikepacking? Check. Foul-weather commuting? Check. Check. Check.

The tech you get

A stout aluminum frame with rack and fender mounts, a vibration-absorbing carbon fork, a 2x10 Shimano GRX drivetrain with lower gears for grinding up hills or through rough gravel, hydraulic disc brakes for all-condition stopping power, and wide 700x40c gravel tires for added stability and traction.

The final word

Bring it on, gravel! Checkpoint ALR 4 is a high-value gateway to a world of adventure. It's rugged, fast, comfortable, and has an amazing amount of tech for its price. Though it's made to stand up to the rigors of gravel roads, the frame geometry and accessory mounts make it a great choice for road rides and commutes, too.

The Walkthrough

favorite_borderWhy you'll love it

  1. Checkpoint ALR 4 introduces you to the exciting new frontier of gravel riding at a value that can't be matched
  2. This bike is exceedingly versatile and suited to a wide variety of ride styles, including gravel rides, bikepacking, and daily commutes
  3. Mounts on the seat tube and both sides of the down tube make it easy to carry extra gear and water
  4. Massive tire clearance means you can use tires up to 45c for extra traction and stability in any conditions
  5. The horizontal sliding dropout makes it easy to fine-tune your geometry or run singlespeed


Features

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame 300 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, horizontal sliding dropouts, 142x12mm thru axle
Fork Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
Wheels
Front hub Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Rear hub Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Rim Bontrager Tubeless Ready, 28-hole, 17mm width, presta valve
Spokes 14g stainless steel
Tire Bontrager GR1 Comp, wire bead, 60 tpi, 700x40c
Drivetrain
Shifter Shimano GRX RX400, 10 speed
Front derailleur Shimano GRX RX400, braze-on
Rear derailleur Shimano GRX RX400, long cage, 36T max cog
*Crank Size: 49
Shimano GRX RX600, 46/30, 165mm length
Size: 52
Shimano GRX RX600, 46/30, 170mm length
Size: 54, 56
Shimano GRX RX600, 46/30, 172.5mm length
Size: 58, 61
Shimano GRX RX600, 46/30, 175mm length
Bottom bracket Shimano RS500, 92mm, PressFit
Cassette Shimano Tiagra HG500, 11-34, 10 speed
Chain KMC X10
Weight
Weight 56 - 10.26 kg / 22.62 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

 

Rider Height

Inseam

All measurements provided in cm unless otherwise noted.

Frame size number A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
49 cm 49.0 75.0° 9.0 71.4° 51.5 7.8 42.5 4.9 6.6 99.5 74.9 37.3 53.2
52 cm 52.0 74.0° 10.7 71.6° 53.6 7.8 42.5 4.9 6.5 100.5 77.0 37.9 54.9
54 cm 54.0 73.5° 12.6 71.8° 55.1 7.6 42.5 4.9 6.4 101.4 78.9 38.3 56.7
56 cm 56.0 73.0° 14.5 72.2° 56.6 7.6 42.5 4.9 6.1 102.0 80.8 38.7 58.6
58 cm 58.0 73.0° 17.1 72.3° 57.7 7.4 42.5 4.9 6.1 103.2 82.9 39.1 60.9
61 cm 61.0 73.0° 20.0 72.6° 59.2 7.4 42.5 4.9 5.9 104.4 85.8 39.7 63.8

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