SRAM Carbon Crank Boot 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 SRAM Carbon Crank boots. Made from injection molded plastic, they will do their best to keep your cranks safe from surface damage. Features: Injection molded plastic crank protection Fits: XX1, X01, XX, XO Protects your crank from scratches and dents from pedal strikes | Sram | Carbon Crank Boots | Black | Pair, Non-Eagle Xx1/x01 Cranks