2021 Trek | Checkpoint AL4
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.
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.
Why you'll love it
|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|
|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|
|Rims:||Bontrager Tubeless Ready, 28-hole, 17mm width, presta valve|
|Tires:||Bontrager GR1 Comp, wire bead, 60 tpi, 700x40c|
|Shifters:||Shimano GRX RX400, 10 speed|
|Front derailleur:||Shimano GRX RX400, braze-on|
|Back derailleur:||Shimano GRX RX400, long cage, 36T max cog|
|Crank:||Shimano GRX RX600, 46/30, 172.5mm length|
|Bottom Bracket:||Shimano RS500, 92mm, PressFit|
|Cassette:||Shimano Tiagra HG500, 11-34, 10 speed|
|Saddle:||Bontrager Montrose Comp, steel rails, 138mm width|
|Seatpost:||Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length|
|Handlebar:||Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 42cm width|
|Grips:||Bontrager Supertack Perf tape|
|Stem:||Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length|
|Headset:||FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom|
|Brakeset:||Shimano RX400 hydraulic disc, flat mount|
|Weight:||10.26 kg / 22.62 lbs|
|Sizes & Colors In Stock||61|