shimano 2X12S RD-RX820 GRX 36T Max
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Features shimano 2x12s rd-rx820 grx 36t max
Silent and safe rear derailleur on rough terrain
Features:- Adjustable chain stabilizer prevents chain jumping and dropping
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on mixed surfaces
- The stabilizer's ON/OFF switch adapts to the terrain
- Max. chainring difference: 17T
- Upper sprocket: Max. 11D/min. 11D
- Small sprocket: max. 36D/min. 34D
- Total capacity: 42D
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