Bike Derailleurs

Shimano GRX RD-RX400 Rear Derailleur 10-Spd, Long Cage, Black w/Clutch A Shadow RD+ chain stabilizer prevents chain slapping and drops The gravel-tuned clutch tension helps to provide smooth and reliable mixed surface shifting Stabilizer can be...

Shimano Tiagra RD-4700 10-Spd GS Rear Derailleur Consistently smooth and light shifting operation Compatible only with ST-4700 and ST-4703 shifters Wider, Rider Tuned 10-speed gearing options Robust adjustability Max Cog: 34t (GS); 28t (SS)