2021 Trek Checkpoint ALR 4
An aluminum frame gravel bike with mid-range components and hydraulic disc brakes, priced at the low end of the Checkpoint model range. Compare the full range
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| MSRP | $1,699 |
|---|---|
| Weight | 22.6 lbs |
| Frame | Aluminum |
| Fork | Carbon |
| Wheels | 700c |
| Tires | 40c |
| Tire Clearance | 45c |
| Drivetrain | 2 × 10 |
| Groupset | GRX 400, GRX 600 |
| Brakes | Hydraulic Disc |
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2 × 10 — 20 speed
Checkpoint ALR 4
Similar Bikes
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 BB Standard: BB86/BB92, press-fit Tire Clearance: 45c |
|---|---|
| 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 | 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 |
| Handlebar | Size: 49, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 38cm width; Size: 52, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 40cm width; Size: 54, 56, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 42cm width; Size: 58, 61, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 44cm 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 | 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 |
| 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 |
