Genuine Shimano replacement part

• Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load
• Gearing gives a low 30T sprocket making it easier to climb even the steepest of hills
• Sprockets are cut away to reduce weight without reducing rigidity
• Nickel-plated finish offers hard wearing resistance to corrosion
• Corrosion-resistant steel cassette lockring
• For 8-speed HG chains