Trek checkpoint alr 4

Checkpoint ALR 4 is a high-value gravel bike ready for the roads less traveled. Kitted out with a 300 Series Alpha Aluminum frame, Checkpoint ALR 4 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Tons of features like tubeless ready wheels, a SRAM Apex 11-speed drivetrain, and mechanical disc brakes make Checkpoint ALR 4 the perfect ride for ease of entry into the wide world of gravel.

• The durable and capable 300 Series Alpha Aluminum frame makes for a fun, stable, and responsive ride
• You get serious versatility thats 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

New progressive geometry

For quick, nimble handling that still keeps you stable and in control on rougher descents.

Tire clearance

Lots of clearance means you can run meatier tires (700x45mm or 27.5x2.1") for tackling chunkier gravel and terrain.

Tons of mounts

Integrated frame bag and fender mounts make it easy to carry gear and water.

Don’t forget your pedals

This bike doesn’t come with pedals because you’ll have a better time on your new bike if you choose your own. See the pedal guide to find the best pedals for your riding style.

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
Wheel Front	/
Tire	Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40mm
Tire Part	Bontrager TLR sealant, 6oz
Hub Front	Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Hub Rear	Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Rim	Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve
Rim Strip	Bontrager TLR
Skewer Front	Bontrager Switch thru axle, removable lever
Skewer Rear	Bontrager Switch thru axle, removable lever
Shifter	SRAM Apex, 11 speed // SRAM Apex, 11 speed
Rear Derailleur	SRAM Apex 1, long cage, 42T max cog
Crank	SRAM Apex 1, 40T, DUB Wide, 165mm length
Bottom Bracket	SRAM DUB, T47 threaded, internal bearing
Cassette	SRAM PG-1130, 11-42, 11 speed
Chain	SRAM PC-1130, 11 speed
Brake	Tektro C550 mechanical disc brake, dual piston, flat mount // Tektro C550 mechanical disc brake, dual piston, flat mount
Brake Rotor	Tektro, centerlock, 160mm
Saddle	Bontrager Verse Comp, steel rails, 155mm width
Seatpost	Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Handlebar	Bontrager Elite Gravel, 38cm width
Stem	Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length

Geometry Chart