Protect your expensive crank arms from rocks, crashes, and everyday scuffs with these simple silicone covers. They’re made to fit SRAM XX1, X01, XX, and X0 crank arms perfectly, slipping right over the ends for a snug, secure fit. The silicone is flexible, durable, and absorbs impacts to help extend the life of your cranks. Installation takes seconds—no tools needed. Each protector is about 44x33mm externally and 13.5x30mm internally. You get four pieces in the pack (enough for two cranks). Whether you’re hitting rocky trails or just want to keep your bike looking fresh, these little caps are a cheap and effective way to prevent damage. Lightweight, low-profile, and totally functional.