Option:
1, 34.9mm
2, 31.8mm(34.9mm with adapter)
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Model: FD-M4000
Level: Alivio
Speed: 3×9 Speed
Compatible chain: HG 9-speed
Mount: Clamp-on
Clamp Band size: 31.8mm/34.9mm
(31.8mm=34.9mm with adapter)
Action: Top Swing
Cable route type: Dual-Pull(Top and down pull)
Top gear teeth: 40T
Total capacity: 18T
Weight: approx 180g