Trek Checkpoint ALR 4 2024

You want to make the jump into the wide world of gravel and also want a fully capable bike for tackling century rides and the daily commute, too. Checkpoint ALR 4 is your ticket to turning every ride into an adventure.

A responsive 300 Series Alpha Aluminum frame, hidden cables that won't interfere with bags, integrated rack, fender, and frame bag mounts, a 1x11 speed SRAM Apex drivetrain for smooth shifting on punchy climbs and variable terrain, mechanical disc brakes for ease of stopping quick in all conditions, tubeless ready rims, and wide Bontrager GR1 Team Issue 700x40c gravel tires for added comfort and traction.

If you're ready to start exploring every road while taking on the daily grind, Checkpoint ALR 4 is your wallet-friendly ride. Versatility is the name of the game and a durable alloy frame, mounts for all kinds of accessories, and wide tires make for comfort and customization wherever the road, or lack thereof takes you.

The durable and capable 300 Series Alpha Aluminum frame makes for a fun, stable, and responsive ride
You get serious versatility that's suited for a wide variety of ride styles, from gravel and bikepacking to daily commutes
Massive tire clearance means you can use tires up to 45c for extra traction and stability in any conditions
Fork, top tube, and integrated frame mounts make it easy to carry gear and water
Powerful mechanical disc brakes make stopping in all conditions easy

Frame	300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle
Fork	Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle

Frame

300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle

Fork

Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle

Weight	56 - 9.80 kg / 21.61 lbs (with TLR sealant, no tubes)
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).

Weight

56 - 9.80 kg / 21.61 lbs (with TLR sealant, no tubes)

Weight limit

This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).

Shifter	SRAM Apex, 11 speed
Rear derailleur	SRAM Apex 1, long cage, 42T max cog
*Crank	Size: 49 SRAM Apex 1, 40T, DUB Wide, 165mm length
Size: 52 SRAM Apex 1, 40T, DUB Wide, 170mm length
Size: 54, 56 SRAM Apex 1, 40T, DUB Wide, 172.5mm length
Size: 58, 61 SRAM Apex 1, 40T, DUB Wide, 175mm length
Bottom bracket	SRAM DUB, T47 threaded, internal bearing
Cassette	SRAM PG-1130, 11-42, 11 speed
Chain	SRAM PC-1130, 11 speed
Max chainring size	1x: 44T, 2x: 50/34

Shifter

SRAM Apex, 11 speed

Rear derailleur

SRAM Apex 1, long cage, 42T max cog

*Crank

Size: 49
SRAM Apex 1, 40T, DUB Wide, 165mm length

Size: 52
SRAM Apex 1, 40T, DUB Wide, 170mm length

Size: 54, 56
SRAM Apex 1, 40T, DUB Wide, 172.5mm length

Size: 58, 61
SRAM Apex 1, 40T, DUB Wide, 175mm length

Bottom bracket

SRAM DUB, T47 threaded, internal bearing

Cassette

SRAM PG-1130, 11-42, 11 speed

Chain

SRAM PC-1130, 11 speed

Max chainring size

1x: 44T, 2x: 50/34

Hub front	Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Skewer front	Bontrager Switch thru axle, removable lever
Hub rear	Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle
Skewer rear	Bontrager Switch thru axle, removable lever
Rim	Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve
Spokes	14g stainless steel, black
Tire	Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40c
Tire part	Bontrager TLR sealant, 180 ml/6 oz
Rim strip	Bontrager TLR
Max tire size	See service manual

Hub front

Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle

Skewer front

Bontrager Switch thru axle, removable lever

Hub rear

Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle

Skewer rear

Bontrager Switch thru axle, removable lever

Rim

Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve

Spokes

14g stainless steel, black

Tire

Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40c

Tire part

Bontrager TLR sealant, 180 ml/6 oz

Rim strip

Bontrager TLR

Max tire size

See service manual

*Saddle	Size: 49, 52 Bontrager P3 Verse Comp, steel rails, 155 mm width
Size: 54, 56, 58, 61 Bontrager P3 Verse Comp, steel rails, 145 mm width
Seatpost	Bontrager alloy, 27.2mm, 12mm offset, 330mm length
*Handlebar	Size: 49 Bontrager Elite Gravel, 38 cm width
Size: 52 Bontrager Elite Gravel, 40 cm width
Size: 54, 56 Bontrager Elite Gravel, 42 cm width
Size: 58, 61 Bontrager Elite Gravel, 44 cm width
Handlebar tape	Bontrager Supertack Perf tape
*Stem	Size: 49 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length
Size: 52, 54 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length
Size: 56, 58 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length
Size: 61 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length
Brake	Tektro C550 mechanical disc brake, dual piston, flat mount
Brake rotor	Tektro, centerlock, 160mm
Rotor size	Max brake rotor sizes: 160mm front & rear

*Saddle

Size: 49, 52
Bontrager P3 Verse Comp, steel rails, 155 mm width

Size: 54, 56, 58, 61
Bontrager P3 Verse Comp, steel rails, 145 mm width

Seatpost

Bontrager alloy, 27.2mm, 12mm offset, 330mm length

*Handlebar

Size: 49
Bontrager Elite Gravel, 38 cm width

Size: 52
Bontrager Elite Gravel, 40 cm width

Size: 54, 56
Bontrager Elite Gravel, 42 cm width

Size: 58, 61
Bontrager Elite Gravel, 44 cm width

Handlebar tape

Bontrager Supertack Perf tape