Shimano GRX RD-RX400 10-Speed GS Cage Rear Derailleur

• GRX 10 speed rear derailleur for double cranks
• Adjustable chain stabilizer prevents chain slapping and drops
• Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain
• Maximum front difference: 16T
• Low sprocket: Max. 36T/Min. 30T
• Top sprocket: 11T