2021 TREK CHECKPOINT ALR 4 ROAD BIKE
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.

SPECIFICATION :
Frame
300 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, Stranglehold dropouts, 142x12mm thru axle
Fork
Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
Bottom Bracket
Shimano RS500, 92mm, PressFit
Headset
FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
Stem
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length
Handlebar
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
Crankset
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 GRX hydraulic disc, flat mount
Rims
Bontrager Tubeless Ready, 28-hole, 17mm width, presta valve
Spokes
14g stainless steel, black
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, 160mm, Centerlock
Weights
56 - 10.26kg / 22.62lbs