SHIMANO&';s HG400-9 delivers reliable 9-speed mountain bike shifting performance and a durable, silver finish. a Close gear steps between primary sprockets creates smooth, comfortable pedaling a 11-36T specification addition to 11-25T, 11-28T, 11-32T, 11-34T, 12-36T specs (11-25T, 11-28T not for RD-M4000/M3000) a HYPERGLIDE technology a Lightweight design a Quick and easy assembly with cassette sprocket cap