Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2021 Trek Checkpoint ALR 4
Previous used estimate
$852 - $877
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Trek Checkpoint ALR 4
12-month projected trend
15%
Direction and magnitude, not judgment
vs. category average
3%
Drops faster than category avg
Price over time - 2021 Trek Checkpoint ALR 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Checkpoint model years
Compare Checkpoint ALR 4 models
1 modelsChoose a different build or frame style to see its value.
Overview
About this 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. 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 - Checkpoint ALR 4 introduces you to the exciting new frontier of gravel riding at a value that can't be matched - This bike is exceedingly versatile and suited to a wide variety of ride styles, including gravel rides, bikepacking, and daily commutes - Mounts on the seat tube and both sides of the down tube make it easy to carry extra gear and water - Massive tire clearance means you can use tires up to 45c for extra traction and stability in any conditions - The Stranglehold Dropout makes it easy to fine-tune your geometry or run singlespeed
Specifications
- Subtype
- Gravel
- Category
- Road
- Component Fork
- Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat mount disc
- Component Hubs
- Bontrager alloy, sealed bearing, Center Lock disc, Shimano/SRAM 11-speed freehub
- Component Size
- 49cm, 52cm, 54cm, 56cm, 58cm, 61cm
- Component Stem
- Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
- Product Family
- Checkpoint
- Component Axles
- Front: 12 x 100mm thru-axle Rear: 12 x 142mm thru-axle
- Component Chain
- KMC X10
- Component Color
- Dark Aquatic, Rage Red
- Component Frame
- 300 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, Stranglehold dropouts
- Component Brakes
- Shimano GRX hydraulic disc, flat mount, w/Shimano SM-RT70, 160mm Center Lock rotors
- Component Saddle
- Bontrager Montrose Comp, steel rails, 138mm width
- Component Headset
- FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
- Component Cassette
- Shimano Tiagra HG500, 11-34T, 10 speed
- Component Crankset
- Shimano GRX RX600
- Component Shifters
- Shimano GRX RX400, 10-speed
- Component Handlebar
- Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop
- Component Seat Post
- Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length
- Component Chainrings
- 46/30T
- Component Front Tire
- Bontrager GR1 Comp, wire bead, 60TPI, 700x40c
- Component Tape Grips
- Bontrager Supertack Perf tape
- Component Bottom Bracket
- Shimano RS500, 92mm, PressFit
- Component Rear Derailleur
- Shimano GRX RX400, long cage, 36T max cog
- Component Front Derailleur
- Shimano GRX RX400, braze-on
- Hubs
- Bontrager alloy, sealed bearing, Center Lock disc, Shimano/SRAM 11-speed freehub
- Crankset
- Shimano GRX RX600
- Bottom Bracket
- Shimano RS500, 92mm, PressFit
- Chain
- KMC X10
- Saddle
- Bontrager Montrose Comp, steel rails, 138mm width
- Handlebar
- Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop
- Headset
- FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
- Front Derailleur
- Shimano GRX RX400, braze-on
- Rear Derailleur
- Shimano GRX RX400, long cage, 36T max cog
- Stem
- Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
- Axles
- Front: 12 x 100mm thru-axle Rear: 12 x 142mm thru-axle
- Brakes
- Shimano GRX hydraulic disc, flat mount, w/Shimano SM-RT70, 160mm Center Lock rotors
- Cassette
- Shimano Tiagra HG500, 11-34T, 10 speed
- Chainrings
- 46/30T
- Fork
- Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat mount disc
- Frame
- 300 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, Stranglehold dropouts
- Seat Post
- Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length
- Shifters
- Shimano GRX RX400, 10-speed
- Tape/Grips
- Bontrager Supertack Perf tape
- Color
- Rage Red
- Size
- 61cm
- Front Tire
- Bontrager GR1 Comp, wire bead, 60TPI, 700x40c
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.