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RD-M21SA (6/7 SP) SHORT CAGE
- Rear derailleur.
- Mountain bikes.
- Model No.: RD-M21SA.
- Cassette Compatibility: 6 / 7 Speed.
- Cage Type: Short Cage.
- Front Chain ring: Double.
- Max. Sprocket: 32T.
- Min. Sprocket: 11T.
- Total Capacity: 37T.
- Guide
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