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It's right for you if...
You're a trail veteran and a regular at your local XC races. You want parts upgrades that make you faster, like lighter carbon wheels and a wider-range drivetrain that saves your legs on the steepest climbs.
The tech you get
A light and stiff carbon frame with trail-smoothing IsoSpeed, a lighter RockShox Reba RL fork with a Solo Air spring, Motion Control damper and a remote lockout, an extra-wide-range SRAM GX Eagle drivetrain, fast 29" Bontrager Kovee Elite 23 carbon wheels and a carbon seatpost.
The final word
An awesome bike for serious racers. The upgraded fork and carbon wheels give you big weight savings for a faster ride.
The Walkthrough
favorite_borderWhy you'll love it
- Carbon frame, carbon wheels, and carbon seatpost spec'd for a lightweight performance ride
- The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter
- You get a Straight Shot downtube for extra-stiff, responsive handling without added weight, and a Knock Block headset that protects against spinning bars and fork crowns
- Carbon rims save rolling weight so you can go faster with less effort
- The new SRAM GX Eagle drivetrain gives you an extra-low climbing gear that saves energy over the long haul
10/10 Editor's choice
"Faster with less fatigue than any other XC hardtail in test...Procaliber was still the smoothest bike here."
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What an XC race bike should be
Procaliber offers a more comfortable ride than a traditional hardtail. It's noticeable right away. Ready to go uphill and down with no regard for anything except stopping to get on the podum.
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Features
IsoSpeed smooth
IsoSpeed takes the edge off body-beating small bumps and trail chatter so you can stay stronger longer, without giving up any pedaling efficiency.
Trek's mountain-specific carbon fiber is tougher carbon, with unique materials and layup procedures, Trek's advanced engineering, and a higher standard of testing.
Straight Shot downtube
Straight Shot downtube gives you an extra-stiff frame without adding any weight, so you can stick your line through the rough stuff and still fly up the next climb.
Knock Block has your frame's back when things go wrong. It prevents your handlebars from spinning all the way around in a crash, so your hoses won't get yanked, and your controls won't hit the top tube.
Complete Tubeless System
Tubeless Ready rims and tires make it easy to ditch the tubes so you get better traction, fewer flats, and less weight. You're ready to roll right out of the box with the included TLR rim strips, valves, and sealant.
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Easier internal routing
Integrated channels in the frame make it super easy to route cable housing and brake hose so you get a clean set-up with no hassle.
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Knock Block
Knock Block has your frame's back when things go wrong. It prevents your handlebars from spinning all the way around in a crash, so your hoses won't get yanked, and your controls won't hit the top tube.
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Anton Cooper returns to the medal stand!
Procaliber brings big results at Leogang XC World Cup.
Read more
How do Bontrager WaveCel helmets work?
Learn more about a major advancement in the protection against cycling-related head injuries.
Learn moreSpecifications
*spec applies to all sizes unless otherwise noted
| Frame | OCLV Mountain Carbon, IsoSpeed, tapered head tube, Knock Block, internal control routing, balanced post mount brake, Boost148 |
|---|---|
| Fork | RockShox Reba RL, Solo Air spring, Motion Control damper, remote lockout, tapered steerer, 42mm offset, Boost110, 15mm Maxle Stealth, 100mm travel |
| Suspension lever | RockShox OneLoc Sprint |
| Max compatible fork travel | 120mm (533 axle-to-crown) |
| Wheel front | Bontrager Kovee Elite 23 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle |
|---|---|
| Wheel rear | Bontrager Kovee Elite 23 carbon, Tubeless Ready, Rapid Drive 108, SRAM XD11 driver, Boost148 |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle |
| Hub rear | Bontrager alloy, sealed bearing, 6-bolt, 108T Rapid Drive, SRAM XD driver, Boost148, 12mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Bontrager Kovee Elite 23 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle |
| Tire | Bontrager XR2 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.20'' |
| Tire part | Bontrager TLR sealant, 6oz |
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 29x2.40" Fork: See manufacturer |
| Shifter | SRAM GX Eagle, 12 speed |
|---|---|
| Rear derailleur | SRAM GX Eagle |
| *Crank |
Size:
S SRAM X1 Eagle, DUB, 32T alloy ring, 52mm chainline, 170mm length |
|
Size:
M , ML , L , XL SRAM X1 Eagle, DUB, 32T alloy ring, 52mm chainline, 175mm length |
|
| Bottom bracket | SRAM DUB, 92mm, PressFit |
| Cassette | SRAM Eagle XG-1275, 10-52, 12 speed |
| Chain | SRAM GX Eagle, 12 speed |
| Max chainring size | 36T, Min 30T |
| Saddle | Bontrager P3 Verse Elite, stainless steel rails, 145mm width |
|---|---|
| *Seatpost |
Size:
S Bontrager Pro, OCLV Carbon, 31.6mm, 0mm offset, 330mm length |
|
Size:
M , ML , L , XL Bontrager Pro, OCLV Carbon, 31.6mm, 0mm offset, 400mm length |
|
| *Handlebar |
Size:
S , M , ML Bontrager Kovee Elite, alloy, 35mm, 5mm rise, 720mm width |
|
Size:
L , XL Bontrager Line, alloy, 35mm, 15mm rise, 750mm width |
|
| Grips | ESI Chunky |
| *Stem |
Size:
S Bontrager Elite, 35mm clamp, 13 degree, 60mm length |
|
Size:
M , ML Bontrager Elite, 35mm clamp, 13 degree, 70mm length |
|
|
Size:
L , XL Bontrager Elite, 35mm clamp, 13 degree, 80mm length |
|
| Headset | Knock Block Integrated, 62-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano hydraulic disc, MT501 lever, MT500 caliper |
| *Brake rotor |
Size:
S , M , ML , L , XL Shimano RT56, 6-bolt, 180mm |
|
Size:
S , M , ML , L , XL Shimano RT56, 6-bolt, 160mm |
| Weight | M - 10.44 kg / 23.02 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & Tech
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
All measurements provided in cm unless otherwise noted.
| Frame size number | Frame size letter | Wheel size | A — Seat tube | B — Seat tube angle | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.5" | S | 29" | 39.3 | 72.8° | 73.8° | 9 | 68.8° | 57 | 31.3 | 6 | 43.2 | 4.2 | 10 | 107.8 | 71.5 | 39.5 | 60 |
| 17.5" | M | 29" | 41.9 | 72.8° | 73.8° | 9 | 68.8° | 59.5 | 31.3 | 6 | 43.2 | 4.2 | 10 | 110.3 | 75.5 | 42 | 60 |
| 18.5" | ML | 29" | 44.4 | 72.8° | 73.8° | 9 | 68.8° | 61 | 31.3 | 6 | 43.2 | 4.2 | 10 | 111.8 | 76.5 | 43.5 | 60 |
| 19.5" | L | 29" | 47 | 72.8° | 73.8° | 9 | 68.8° | 62.5 | 31.3 | 6 | 43.2 | 4.2 | 10 | 113.3 | 78.4 | 45 | 60 |
| 21.5" | XL | 29" | 51 | 72.8° | 73.8° | 10.5 | 68.8° | 65.9 | 31.3 | 6 | 43.2 | 4.2 | 10 | 116.8 | 81.4 | 48 | 61.4 |