Shimano 9 Alivio 11-25

High quality 9-speed cassetteKey Features 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 Gear ratios to suit all wheel sizes 700C/26/27.5/29inch Sprockets are cut away and drilled to reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Corrosion-resistant steel cassette lockring For Super Narrow 9-speed HG chains