Shimano CS-HG51 8 Speed Cassette
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.
- High quality 8-speed cassette
- Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load
- Close ratio gearing allows a more efficient use of energy through finer cadence control
- Sprockets are cut away to further reduce weight without reducing rigidity
- Nickel-plated finish offers hard wearing resistance to corrosion
- Corrosion-resistant steel cassette lockring
- For 8-speed HG chains
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.