Trek Checkpoint ALR 4 Gen 2

Name: Trek Checkpoint ALR 4 Gen 2
Brand: Trek

2025 RoadGravel Manufacturer page

Trek Checkpoint ALR 4 Gen 2, color Matte Deep Dark Blue

Price: Not published

Prices shown first for United States
Europe: €1,499 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 11 40t / 11–42t
Gear range: 382%
Weight: 9.91 kg 21.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

54cm 168–174

Components

16 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

300 Series Alpha Aluminium, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and mudguard mounts, integrated frame bag mounts, flat-mount disc, 142x12 mm thru-axle Not identified

Suspension

1 part

Fork

Checkpoint carbon, tapered carbon steerer, rack mounts, mudguard mounts, flat-mount disc, 12x100 mm thru axle Not identified

Drivetrain

6 parts

Brakes

2 parts

Brakes
- Tektro MD-C550
MD-C550
Disc rotors
- Tektro

Wheels and tires

5 parts

Front hub
- Bontrager
Rear hub
- Bontrager
Rims
- Bontrager
Spokes

14g stainless steel, black Not identified
Tires
- Bontrager

Cockpit and contact points

4 parts

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 403mm

Stack 571mm

Wheelbase 1041mm

Head angle 71.8°

Seat angle 73.2°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	403
Stackmm	571
Top tube lengthmm	570
Seat tube lengthmm	540
Head tube lengthmm	125
Head tube angle	71.8°
Seat tube angle	73.2°
Chainstay lengthmm	435
Wheelbasemm	1041
Front centermm	617
Bottom bracket dropmm	76
Bottom bracket heightmm	273
Standover heightmm	789
Fork rakemm	45
Trailmm	70
Stack/reach ratio	1.42
Suspension and parts
Stem lengthmm	80

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Carbon
Bicycle weight: 9.91 kg

21.8 lb
Weight limit: 125 kg

275.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 27.6 in
Highest gear: 105.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: T47
Tire width: 40c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

27.6 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

105.5 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.6 km/h
Highest gear: 40.4 km/h

Total gear range 382%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 27.6–105.5 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification	This bicycle Trek Checkpoint ALR 4 Gen 2	Trek Checkpoint ALR 3	Trek Checkpoint ALR 3 Gen 2	Trek Checkpoint ALR 4	Trek Checkpoint ALR 5	Trek Checkpoint ALR 5 Gen 2
Frame
Bicycle weight	9.91 kg	10.61 kg	10.61 kg	9.91 kg	9.71 kg	9.71 kg
Drivetrain
Front chainrings	1	2	2	1	1	1
Smallest chainring	40	30	30	40	40	40
Largest chainring	40	46	46	40	40	40
Rear sprockets	11	9	9	11	12	12
Largest sprocket	42	32	32	42	44	44
Lowest gear	27.6 in	27.2 in	27.2 in	27.6 in	26.4 in	26.4 in
Highest gear	105.5 in	121.3 in	121.3 in	105.5 in	105.5 in	105.5 in
Brakes
Brake type	Mechanical disc	Mechanical disc	Mechanical disc	Mechanical disc	Hydraulic disc	Hydraulic disc
Other specifications
Tire width	40c	42c	42c	40c	40c	40c