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Trek Procaliber SL Mountain Bike Frame 2021

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Procaliber SL Mountain Bike Frame 2021
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Product ID: 1170795

The Procaliber SL Mountain Bike Frame uses Trek’s Super Light OCLV Mountain Carbon to keep the frame weight down to a claimed 1.05kg, which is light even by road bike standards.

Despite it being a hardtail, the IsoSpeed technology allows more controlled flex in the frame than is usual, without compromising the stiffness for power transfer.

Trek Procaliber SL Mountain Bike Frame 2021

Trek’s Procaliber SL Mountain Bike Frame is the ideal basis for a superlight, race-ready hardtail build, with the OCLV carbon frame barely troubling the scales at just 1.05kg (claimed). The Smart Wheel Size design means that it is suitable for either 27.5” or 29” wheels depending on the frame size, allowing consistent handling to be maintained across the spectrum. The IsoSpeed decoupler technology provides much more compliance in the seat tube than in a standard frame, yet still keeps the bottom bracket and chainstays stiff for great power transfer. This means less fatigue, more traction and control and hence more speed, vital for winning races and having fun out on the trails.


  • Super Light OCLV Mountain Carbon frame with internal cable routing
  • IsoSpeed technology
  • Smart Wheel Size, size S and M designed for 27.5”, larger sizes use 29”
  • Frame weight of just 1.05kg (claimed, size medium)

Technical Specification

Frame Trek Super Light OCLV Mountain Carbon, IsoSpeed, E2 tapered head tube, MicroTruss, Control Freak internal routing, balanced post mount brake, PF92, Boost148 & G2 Geometry on 17.5˝ and larger sizes
Bottom Bracket PF92
Headset FSA IS-2, 1-1/8" top, 1.5" bottom
Weight Limit 136kg (bike, rider and cargo)
Manufacturer Claimed Weight 1.13kg size medium

Trek Procaliber SL Mountain Bike Frame 2021 Sizing

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