Procaliber AL Frame Set is a race-worthy cross-country mountain bike with the unique advantage of IsoSpeed, a decoupler at the top tube/seat tube junction that provides additional compliance on rough trails. This Alpha Platinum Aluminium frame set is a wallet-friendly start to a lightweight XC build for your fastest singletrack rides ever.

You like to go fast and also love the idea of a hardtail with frame tech designed to take the edge off rough singletrack. Speed is your main consideration, but comfort is right up there, too.

A lightweight Alpha Platinum Aluminium frame with IsoSpeed, a tapered head tube and internal derailleur routing. Procaliber AL Frame Set includes a head set, and is designed for a PF92 bottom bracket, post-mount disc brakes and Boost148 wheels.

Procaliber AL is a lightweight aluminium mountain bike frame set built in Trek's trail heritage. It's fast, responsive and it comes in at great value, but the biggest advantage is the trail-smoothing IsoSpeed decoupler, which takes the edge off fatiguing bumps in the trail so you can stay stronger for longer.
- The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beaten up by trail chatter
- Internal cable routing extends the life of your cables and adds to the bike's sleek look
- This Alpha Platinum Aluminium frame is race-light and trail-tough