You´ve been brand-loyal since the F700 debuted in the 1996 Olympics — or maybe you're a history buff with an appreciation for fine craftsmanship. Whichever it is, you can have it both ways with our REX 1.1 cranks for your Cannondale F-Si Ai frame. In addition to biomechanical performance, there was one more important factor when designing REX 1x cranks: compatibility. We wanted everyone to be able to experience REX cranks so we designed the REX 1.1 Cannondale F-Si Ai specifically for Cannondale's asymmetric integration frames. Crank arms CNC-machined from aeronautic-grade 7055 aluminum are combined with proprietary technologies to yield cranks with an exceptional stiffness-to-weight ratio that can handle a thrashing off-road.
Weight: 172.5mm length 494g
- Spider: 76BCD
- Spindle: 30mm aluminum alloy
- Q-Factor: 163 mm
- Chainline: 56mm
- Material: 100% CNC-machined, 7055 aluminum alloy
- Compatibility: Cannondale F-Si Ai bottom brackets Oval and round chainrings, 76BCD 9,10 and 11 speed