Get hardtail XC MTB speed with Procaliber – Trek Bikes

Race you to the top

Procaliber is a game changing cross-country race machine that pairs classic hardtail efficiency with capable geometry for a ride that’s chomping at the bit to attack off the starting line and sprint up climbs. From short track to ultra-endurance, for the World Cuppers and the first timers, Procaliber is a XC mountain bike built to deliver the speed and power you need to stay at the front of the pack. 

Two steeds built for speed

With a pedigree in racing, Procaliber is ready to ride fast, and its two unique frame builds make it the perfect fit no matter your budget. Whether you go carbon or alloy, you get 29˝ wheels, internal cable routing, and stiff thru-axles for hardtail efficiency that’ll keep you at the front on the climbs and point you straight toward the podium.

Cool carbon composure

Extra light, extra stiff, extra comfortable. Procaliber Carbon gives you trail-smoothing OCLV Carbon and IsoSpeed technology that decouples the seat tube from top tube to reduce chatter. A 100mm fork keeps it lean and mean, so you get a lighter ride that saves precious watts when your quads are scorched and every millisecond matters. 

Ride metal, earn medals 

Procaliber alloy delivers speed at a value with a lightweight Alpha Platinum Aluminum chassis. It’s the perfect hardtail for those looking to hit the trail quickly, cover some miles, and race a little – or a lot. You get a lightweight alloy frame with progressive geometry and a longer 120mm travel fork to handle tricky sections of trail. 

IsoSpeed: Fast with a side of smooth

Smooth means fast. Our innovative IsoSpeed decoupler increases vertical compliance and smooths trail chatter without sacrificing pedaling efficiency so you can ride faster, longer and stronger. Available on Procaliber Carbon only.

Sleek and stealthy

Internal routing on all models keeps cables quiet, reducing rattling and maintenance along with it. Plus, it looks modern and sleek. 

Wheely big benefits

Every Procaliber comes with 29˝ wheels that drop rolling resistance and help you get more distance out of every pedal stroke. Plus, they come set up tubeless for improved traction and flat protection. 

Stiff and responsive

Snappy acceleration and hairpin turns are no match for Procaliber. With 148mm thru-axle in the rear and a tapered headtube, handling stays precise, nimble, and quick, even through gnarly terrain. 

On guard

Beefy chainstay guards keep your ride shielded from rocks and knocks on the trail. Plus, Procaliber Carbon gets Knock Block for added protection when the bars go sideways.

Choose your Procaliber 

Looking for something else?


If you’re looking to step up your racing game with even more trail smoothing technology, Supercaliber is the ride for you. See how its integrated IsoStrut shock can give you hardtail efficiency with full suspension confidence. 


Looking for something that rolls beyond cross country and into all-mountain trails? Roscoe is a hardtail with relaxed geometry for handling rowdier terrain and more travel for gobbling up rocks and roots.