M21 Rear Derailleur 6/7 Speed Super Short Cage
RD-M21SS
Menu
M21 Rear Derailleur 6/7 Speed Super Short Cage
Our line of mountain and trekking derailleurs starts with M21, but that doesn’t mean it’s entry level. Using the same kinematics as our more expensive derailleurs and innovative construction technics, M21 delivers responsive performance in an attainable package.
Features.
- Robust attachment body improves durability and shifting response
| Speed | 7-Speed, 6-Speed |
|---|---|
| Cage Length | Super Short Cage |
| Max Cog | 28-30T |
| Min Cog | 13-14T |
| Capacity | 21T |
| Clutch | No |
| Cage Material | Steel |
| Outer Link Material | Composite |
| Compatibility | Shimano Mountain |
