When it comes to cross country hardtails, it doesn't get better than Procaliber 9.9 SL. The highest-end mountain bike in our Procaliber family is dressed to impress, with an SL OCLV Mountain Carbon lay-up that's a lot lighter than our non-SL frame, an advanced RockShox SID SE Carbon fork, Bontrager Kovee Pro 30 carbon wheels and a SRAM XX1 Eagle drivetrain.

You're riding every day, racing every weekend and want an no-compromise XC bike that goes as fast as your heart, legs and lungs can carry you. You want a rig with a top-level spec that adds speed and efficiency without adding weight, and you know that an investment in a great race bike has a return in results.

A race-ready XC bike under 9 kg. Our super-light SL OCLV Mountain Carbon frame with trail-smoothing IsoSpeed, RockShox SID SE Carbon fork with remote lockout, Bontrager Kovee Pro 30 carbon wheels with a 108-tooth Rapid Drive rear hub for instant engagement, SRAM XX1 Eagle 1x12 drivetrain, super-light SRAM Level Ultimate carbon hydraulic disc brakes and Bontrager XXX carbon seatpost and handlebar.

Smoother. Lighter. Faster. This bike was built to win the XC game. Its ultra-lightweight frame and top-of-the-line spec was made to go fast, with serious performance fit for a serious rider.
- There's nothing left to want on this bike ? in no uncertain terms, it has the best of everything
- It's crazily light, super fast and efficient ? all qualities that really matter when you're gunning for the podium
- The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beaten up by trail chatter
- Carbon parts all over will turn heads at the start line and podium ? the only two places that your competition is likely to see you if you're riding this bike to its potential
- Make it yours: customise your ride through Project One