The Shimano compatible alloy cassette cog is made from 7075 aluminum and designed as a lightweight alternative to a standard steel cog. Fits cassette hubs with Shimano spline pattern, including ACS, Bombshell, GT and Rhythm.
15T: 41 or 42T
Why put an old stretched out chain on your new drivetrain? Dans Comp has a large selection of BMX Chains.