GRX RD-RX400 Rear Derailleur - 10-Speed, Long Cage, Black, With Clutch

GRX 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