Trek 2021 Checkpoint ALR 4

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The 2021 Checkpoint ALR 4 by TREK brings adventure to your fingertips with its robust aluminium frame and unmatched versatility. As a superior gravel bike, it thrives on various terrains, whether you are manoeuvring through rugged gravel or gliding down tarmacked roads. Perfect for bikepacking or regular commuting, it’s designed to elevate your outdoor journeys.

No road is off limits with the Checkpoint ALR 4. It’s an all-rounder gravel bicycle, boasting of a resilient 2x10 Shimano GRX drive train that makes tough ascents or rough patches a breeze. The bike's hydraulic disc brakes provide a reliable stopping power in all weather conditions. Equipped with 700x40c gravel tyres, grip and stability are enhanced on uneven trails.

Expect nothing less than phenomenal performance from this TREK offering. Showcasing ingenious tech features at an unbeatable value, the Checkpoint ALR 4 rides smoothly through the toughest conditions. Despite being designed to withstand gravel paths, its frame geometry along with the accessory mounts also makes it a top pick for road rides and city commutes.

  • The Checkpoint ALR 4 allows you to experience the thrilling world of gravel riding without breaking the bank.
  • Adapt to countless riding styles - from vigorous gravel rides, adventurous bikepacking, to peaceful daily commutes.
  • Convenient mounts on the seat tube and both sides of the down tube for carrying additional water and gear.
  • Exceptional tyre clearance enables the usage of tyres up to 45c, promoting greater traction and stability in various conditions.
  • The adaptable horizontal sliding dropout facilitates fine-tuning of your geometry or running singlespeed.

An ideal mudguard companion and a reliable aid in carrying extra gear, TREK's Checkpoint ALR 4 truly opens a gateway to bicycle adventure.

Frame Size 54, UNI, Aluminium, 300 Series Alpha Aluminium, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, horizontal sliding dropouts, 142x12 mm thru-axle
Wheel Size Front 28
Wheel Size Rear 28
Fork Checkpoint carbon, tapered alloy steerer, rack mounts, mudguard mounts, flat-mount disc, 12x100 mm thru axle
Fork Unknown
Gears DERAILLEUR, Shimano, 1 Gears
Wheels UNKNOWN, Bontrager Tubeless Ready, 28-hole, 17 mm width, Presta valve Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle
Shifters SHIMANO, Shimano GRX RX400, 10 speed // Shimano GRX RX400, 10 speed,
Kickstand UNKNOWN, Unknown
Front Brake SH, Shimano RX400 hydraulic disc Shimano RT70, CentreLock, 160 mm Max brake rotor size, Disc brake with hydraulic actuation
Rear Brake SH, Shimano RX400 hydraulic disc Shimano RT70, CentreLock, 160 mm Max brake rotor size, Disc brake with hydraulic actuation
Front Derailleur SHIMANO, Shimano GRX RX400, braze-on
Rear Derailleur ,
Crankset SHIMANO, Shimano GRX RX600, 46/30, 172.5 mm length Shimano RS500, 86 mm, PressFit
Chain KMC, KMC X10
Handlebar BONTRAGER, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 42 cm width
Stem BONTRAGER, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length
Saddle BONTRAGER, Bontrager Montrose Comp, steel rails, 138 mm width
Front Light UNKNOWN
Rear Light UNKNOWN
Sizes 49, 52, 54, 56, 58, 61
Brand Trek
Model Year 2021
Barcodes 601842334249, 601842334256, 601842334263, 601842334270, 601842334287, 601842334294, 601842334300, 601842334317, 601842334324, 601842334331, 601842334348, 601842334355
SKUs / Part Numbers 601500, 601501, 601503, 601515, 601516, 601517, 601518, 601519, 601520, 601521, 601522, 601524

Please note: Manufacturers can sometimes change the specification of the products from time to time.

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