The 2021 Trek Checkpoint ALR 4 is a aluminum frame gravel bike with mid-range components and hydraulic disc brakes.
View on www.trekbikes.com
Notify me when this bike becomes available or goes on sale.
2 × 10 — 20 speed
The Checkpoint ALR 4 is easier to ride up hills than similar bikes.
The Checkpoint ALR 4 is geared about the same as similar bikes for riding downhill.
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more
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 |
Bottom Bracket | Shimano RS500, 86mm, PressFit |
Headset | FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom |
Stem | Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
Handlebar | Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 42cm width |
Saddle | Bontrager Montrose Comp, steel rails, 138mm width |
Seatpost | Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length |
Rear Derailleur | Shimano GRX RX400, long cage, 36T max cog |
---|---|
Front Derailleur | Shimano GRX RX400, braze-on |
Crank | Shimano GRX RX600, 46/30, 172.5mm length |
Shifters | Shimano GRX RX400, 10 speed |
Cassette | Shimano Tiagra HG500, 11-34, 10 speed |
Chain | KMC X10 |
Brakes | Shimano RX400 hydraulic disc, flat mount |
Rims | Bontrager Tubeless Ready, 28-hole, 17mm width, presta valve |
---|---|
Spokes | 14g stainless steel |
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 |
Tires | Bontrager GR1 Comp, wire bead, 60 tpi, 700x40c |
Disk Rotors | Shimano SM-RT70, centerlock, 160mm |