GRX RD-RX400 Rear Derailleur - 10-Speed, Long Cage, Black, With Clutch Seat pack 2pc cover with aramid sides

2pc cover with aramid sides

The unique intespoke milling helps reduce weight to increase acceleration and easier climbing

Can be set up with wide or narrow stance

Using a PF30 or BB30 bottom bracket with outboard bearings is REQUIRED

harsh conditions

GRX RD-RX400 Rear Derailleur - 10-Speed, Long Cage, Black, With Clutch Seat pack 2pc cover with aramid sidesGRX RD RX400 Rear Derailleur 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 turned on off to match terrain Compatible only with 10 speed ST RX400, ST 4700, ST4720, ST 4725, ST RS405 and SL 4700 shift levers