Trek Procaliber AL Mountain Bike Frame 2021
Whether it’s for venturing onto the XC race course or just enjoying the hardtail efficiency out on the trails, Trek’s Procaliber AL Mountain Bike Frame makes a great starting point for a fast bike build. The Alpha Platinum Aluminium tubes make the frame super responsive to pedalling inputs whilst the clever IsoSpeed decoupler design adds extra plushness to the bike across rough terrain. It allows the seat tube to move more than normal to better absorb bumps without compromising power transfer. The two smallest sizes are built for use with 27.5" wheels with 29" fitting the rest of the range so that all riders can enjoy a balanced geometry with sweet handling. A tapered head tube, 100mm fork compatibility and internal cable routing add to the frame’s attractiveness, coupled with its low weight and durability.
Technical Specification
| Frame | Trek Alpha Platinum Aluminium, IsoSpeed, tapered head tube, internal derailleur routing, balanced post-mount brake, Boost148, 12mm thru-axle |
| Headset | FSA IS-2, 1-1/8" top, 1.5" bottom |
| Bottom Bracket | PF92 standard (not included) |
| Maximum Compatible Fork | 100mm |
| Maximum Chainring | 36t |
| Maximum Tyre Size | 29” x 2.4” 27.5” x 2.4” (size XS and S) |
| Manufacturer’s Claimed Weight | 2.09kg size medium |