Trek Procaliber SL Frameset


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Checkpoint ALR 5 Driftless is a custom-painted, high-quality gravel bike that will hold up for long, rugged miles on pavement, dirt, and even the most treacherous gravel roads. A wealth of features like nimble-yet-stable progressive geometry, loads of mounts, plus a GRX drivetrain make it easy to customize for your kind of adventure.

– All-new progressive geometry is quick and nimble yet keeps you stable and in control on fast, choppy descents
– The gorgeous paint scheme and topo map pattern evoke the rugged, hilly escape of Wisconsin’s driftless region—an area untouched by terrain-flattening glaciers
– Comes kitted out with a custom Bontrager frame bag that features the same topo map design as your Checkpoint!
– This bike is exceedingly versatile and suited to a wide variety of ride styles, including gravel rides, bikepacking, and daily commutes
– Integrated frame bag mounts and rack and fender mounts make it easy to carry gear and water

Geometry Chart:
Size 49cm 52cm 54cm 56cm 58cm 61cm
BB Drop (cm) 7.8 7.8 7.6 7.6 7.4 7.4
Chainstay Length (cm) 43.5 43.5 43.5 43.5 43.5 43.5
Eff. Top Tube (cm) 54.1 55.5 57.0 58.4 59.7 61.7
Frame Reach (cm) 39.3 39.9 40.3 40.7 41.1 41.7
Frame Size Number (cm) 49 52 54 56 58 61
Frame Stack (cm) 53.8 55.3 57.1 59.2 60.9 63.9
Head Angle 71.2° 71.6° 71.8° 72.2° 72.3° 72.6°
Head Tube Length (cm) 9 10.5 12.5 14.5 16.5 19.5
Offset (cm) 4.5 4.5 4.5 4.5 4.5 4.5
Seat Tube (cm) 49 52 54 56 58 61
Seat Tube Angle 74.1° 73.7° 73.2° 72.8° 72.5° 72.1°
Standover (cm) 73.5 76.5 78.9 80.9 82.9 85.9
Trail (cm) 7.4 7.1 7 6.7 6.6 6.5
Wheelbase (cm) 102.5 103.3 104.1 104.8 105.8 107
Wheel Size 700c 700c 700c 700c 700c 700c


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, carbon legs, tapered alloy steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
Rims Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, presta valve // Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21mm width, presta valve
Hubs Front: Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Rear: Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Spokes 14g stainless steel
Axles Bontrager Switch thru axle, removable lever
Tires Bontrager GR2 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40c
Bottom Bracket Praxis, T47 threaded, internal bearing
Crankset Shimano GRX RX600, 40T
Shifters Shimano GRX RX810, 11 speed // Shimano GRX RX810 hydraulic disc
Rear Derailleur Shimano GRX RX812, long cage, 42T max cog
Cassette/Freewheel Shimano SLX M7000, 11-42, 11 speed
Chain Shimano HG601
Brakes Shimano GRX hydraulic disc
Rotors Shimano SM-RT70, centerlock, 160mm
Handlebars Bontrager Elite Gravel
Stem Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
Headset FSA Integrated, sealed cartridge bearing, 1-1/8” top, 1.5” bottom
Seatpost Easton EA70 AX, 27.2mm, 0mm offset, 50mm travel
Saddle Bontrager P3 Verse Comp, steel rails
Accessories & Extras Bontrager TLR sealant, 6oz

* Subject to change without notice.


Option UPC MPN Store SKU
Satin Cobra Blood / 49cm 601842670378 5268082 CHE40571815D
Satin Cobra Blood / 52cm 601842670361 5268083 CHE40255198D
Satin Cobra Blood / 54cm 601842670354 5268084 CHE40669718D
Satin Cobra Blood / 56cm 601842670347 5268085 CHE40270828D
Satin Cobra Blood / 58cm 601842670330 5268086 CHE40518156D
Satin Cobra Blood / 61cm 601842670323 5268087 CHE40493907D


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