Protect your carbon or alloy cranks from the abuse of trail riding. These are a must have item when using carbon cranks. We use these boots with our Race Face cranks and they have held up extremely well and have done an exceptional job protecting the crank arms. No more worrying about bashing your crank arms on rough trails! To install, remove pedals and slip over the end of your crank arms. Medium Carbon Compatibility: Sixc Cinch Sixc (24mm Spindle) Chester Respond Next/Next SL (24mm Spindle) Next SL Cinch (G3) Next R All SRAM Carbon Cranks Shimano Saint Gravity Cranks These are not compatible with the new Next SL G4's or alloy cranks such as the Turbine. The internal measurement of these is 37mm x 14mm Small Alloy Compatibility: Race Face: Turbine Cinch, Atlas Cinch, Atlas (24mm Spindle), Turbine (24mm Spindle), Aeffect Cinch (175mm length ONLY) Shimano: XTR, XT, SLX, Deore SRAM: X1 (Alloy), X9, X7, X5, S1400, S1000, S800 Deus Most alloy road cranks
