Shimano GRX RD-RX820 Rear Derailleur 12s & Max 36t Black
£76.58
Features:- Silent and secure rear shifting on rough terrain- Adjustable chain stabilizer prevents chain slap and drops- SHIMANO SHADOW RD+- Smooth and reliable shifting on mixed surfaces- ON/OFF stabilizer switch matches terrain- Maximum front chainring difference: 17TSpecifications:- Top sprocket: Max. 11T/Min. Open full product description
