The Shimano CS-HG50-8 Lockring for 11T Top Gear is a genuine replacement lockring designed for Shimano 8-speed HG cassettes using an 11T smallest sprocket. It securely holds the cassette sprockets in place on the freehub body and is identified by Shimano code Y1YA01000
Features
Genuine Shimano replacement lockring
Designed for 11T top gear cassettes
Compatible with CS-HG50-8 8-speed cassette configurations