This ALTER crank arm bolt dust cap covers the bolt on a square tapered crank, keeping grit out of the threads. Small piece, 1 job. The smooth cap sits flush and stays out of your shoe.
Choose the color you want
Silver keeps it plain. Red, purple, green, gold, and pink add a clean accent without changing the fit. Handy when you want the bike to match the rest of the build.
Reach for it on install
Use it when swapping cranks or replacing a missing cap. It's a simple finish piece, and the low-profile shape makes the bolt look tidy instead of bare.
