Procaliber SL is for the fastest XC riders. It's built with Super Light OCLV Mountain Carbon and delivers the unique trail-smoothing advantage of IsoSpeed, which takes the edge off fatiguing bumps in the trail so you can stay stronger for longer.

You have a dream XC build in mind, and you want to start with an ultra-light carbon hardtail frame so you can fly up climbs and win every sprint off the line. You have a dream XC build in mind, and you want to start with an ultralight carbon hardtail frame so you can fly up climbs and win every sprint off the line.

A Super Light OCLV Mountain Carbon frame with Control Freak internal cable routing and trail-smoothing IsoSpeed. The Procaliber SL frame set includes a headset, and is designed for a PF92 bottom bracket and Smart Wheel Size with up to 2.2" wide tyres. A Super Light OCLV Mountain Carbon frame with Control Freak internal cable routing and trail-smoothing IsoSpeed. The Procaliber SL frameset includes a headset, and is designed for a PF92 bottom bracket and Smart Wheel Size with up to 2.2" wide tires.

Smoother. Lighter. Faster. Procaliber SL Frame Set Gen 1 was built to win the XC game. The ultra-lightweight SL OCLV Mountain Carbon frame with IsoSpeed delivers serious performance for serious riders. Smoother. Lighter. Faster. Procaliber SL Frameset Gen 1 was built to win the XC game. The ultra-lightweight SL OCLV Mountain Carbon frame with IsoSpeed delivers serious performance for serious riders.
- This SL OCLV Mountain Carbon frame set is the ideal start to an obscenely lightweight cross country build This SL OCLV Mountain Carbon frameset is the ideal start to an obscenely lightweight cross country build
- The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beaten up by trail chatter The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter
- Control Freak Cable Management allows you to run any combination of cables exactly the way you want, while still giving you sleek looks and protecting your cables against unnecessary wear Control Freak Cable Management allows you to run any combinati
- Boost148 spacing for 29" wheels on all frame sizes except S, which has a 142x12 mm rear axle and 27" wheels Boost148 spacing for 29" wheels on all frame sizes except S, which has a 142x12mm rear axle and 27" wheels

OCLV Mountain Carbon
Trek's mountain-specific carbon fibre is tougher carbon, with unique materials and lay-up procedures, Trek's advanced engineering, and a higher standard of testing.

IsoSpeed smooth
IsoSpeed takes the edge off body-beating small bumps and trail chatter so you can stay stronger longer, without giving up any pedalling efficiency.

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