SHIMANO Unisex Csr7000130 Bike Parts, Standard, 11 30 teeth UK

HG Cassette Sprocket (11-speed)Key Features:High performance HG-EV 11-speed 105 Road cassetteHyperglide EV sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under loadClose ratio gearing allows a more efficient use of energy through finer cadence controlLargest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigiditySprockets are cut away and drilled to further reduce weight without reducing rigidityNickel-plated finish offers hard wearing resistance to corrosionPearl-bright steel cassette lockringFor Super Narrow 11-speed HG-X chains