Bike Rear Derailleurs

Shop rear derailleurs for road, mountain, gravel and hybrid bikes at Xtremity Sports.

Our range includes rear derailleurs for different cassette sizes, drivetrain speeds and riding styles from trusted brands including Shimano and SRAM. Whether you are replacing a damaged derailleur, repairing worn gearing or upgrading your drivetrain, correct compatibility with your cassette, chain, shifter and derailleur hanger is essential.

Browse our available rear derailleurs online or visit our shop in Park Gate, Southampton, for expert compatibility advice. Professional fitting, gear adjustment, drivetrain repairs and bike servicing are also available through our workshop.