SHIMANO ALIVIO - 8-Speed - HYPERGLIDE - Cassette Sprocket
Offered in a wide range of road gearing, the HG51-8 cassette is perfect for 8-speed road drivetrains.
The distinctively designed HYPERGLIDE sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result.
The HG cassette sprocket, underwent comprehensive optimization to achieve super-highly efficient shifting.
Guide the chain quickly and directly to the next sprocket without override.
Cause the chain to ride up and over the gear teeth before engaging the sprocket.