Shimano 10S 1234579135 Sprocket 11-25T CS-6700

Speed: 10 speed Compatible chain: 10 speed super narrow HG Average weight: 209g (11-23T) Lighter and more accurate. Newly designed cassette sprocket. The gear sprocket has been newly designed to reduce weight and the shape of the gears has been revised to allow the chain to move more smoothly. A lineup of wide tooth configurations suitable for hill climbs and road touring. Adopts aluminum alloy spider arm and aluminum lock ring.