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Shimano GRX RD-RX400 10-Speed Rear Derailleur

Shimano GRX RD-RX400 10-Speed Rear Derailleur

The Shimano GRX RD-RX400 10-speed rear derailleur keeps shifting silent and uninterrupted when riding on rough terrain.

  • 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 with Shimano 10-speed roa
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