Race Face Alloy Crank Boots Trail riding can be tough on your gear. The ends of your cranks take a lot of abuse as the trail rushes underneath you and your bike. Protect your cranks from any damage with Race Face crank boots. Made from a durable Race Face proprietary thermoplastic blend, leave doubt behind and go with the originator in crank end protection. Wrap it up and protect those tips! Features Smaller than the Standard RF Crank Arm Boots Made to fit aluminum crank arms Compatible with: Turbine Cinch Atlas Cinch Atlas (24mm Spindle) Turbine (24mm Spindle) Aeffect Cinch (175mm length ONLY) | Race Face | Alloy Crank Boots Green