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- Close gear steps between primary sprockets creates smooth, comfortable pedaling
- »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)
- －HYPERGLIDE technology
- ・Lightweight design
- ・Quick and easy assembly with cassette sprocket cap