• GRX Di2 11 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: 17T
• Total capacity: 40T
• Low sprocket: Max. 34T/Min. 30T
• Top sprocket: 11T
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