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It's right for you if...
In group trail rides and XC races, you lead the pack. You're looking for the performance edge that comes with a lightweight carbon frameset with exclusive IsoSpeed technology that smooths out trail chatter so you can stay stronger longer.
The tech you get
A lightweight OCLV Mountain Carbon frame with IsoSpeed, a tapered head tube, and internal control routing that's super easy to use. Procaliber frameset includes a Knock Block headset, and is designed for a 100mm fork, up to 2.4" wide tires and 1x drivetrains with up to a 36-tooth chain ring. Built for a PF92 bottom bracket, post-mount disc brakes, and Boost148 wheels.
The final word
A lightweight carbon mountain bike frameset built to perform in XC races and blazing fast group rides. It's nimble, quick on climbs, and responsive in and out of corners. Best of all, it delivers a massive advantage in speed and comfort with the trail-smoothing IsoSpeed decoupler.
The Walkthrough
favorite_borderWhy you'll love it
- OCLV Mountain Carbon is race-light and trail-strong
- The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter
- New internal control routing is super easy to use thanks to built-in channels that guide your hose or housing easily through the frame
- 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
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.
Read moreFeatures
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.
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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Specifications
*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 |
|---|---|
| Max compatible fork travel | 120mm (533 axle-to-crown) |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
|---|---|
| Max tire size | 29x2.40" |
| Max chainring size | 36T, Min 30T |
|---|
| Headset | Knock Block Integrated, 62-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
|---|
| Weight | M - 1.35 kg / 2.98 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 stated.
| 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 |
| 23.0" | XXL | 29" | 54.5 | 72.8° | 73.8° | 12 | 68.8° | 68.3 | 31.3 | 6 | 43.2 | 4.2 | 10 | 119.4 | 84.1 | 50 | 62.3 |