NEW Shimano GRX RD-RX815 Di2 Rear Derailleur - 11-Speed, Clutch, 34t max Type_Pumps HYPERGLIDE+ technology dedicated chain delivers

HYPERGLIDE+ technology dedicated chain delivers greater chain retention

Mount | Rotor Size: Front Flat | 160 Rotor

Double-riveted rubber mud flaps

For extra large frames

additional links or liners may be required

NEW Shimano GRX RD-RX815 Di2 Rear Derailleur - 11-Speed, Clutch, 34t max Type_Pumps HYPERGLIDE+ technology dedicated chain deliversGRX RD RX815 Di2 Rear Derailleur Operates with Shimano Di2 for digital electronic shifting Gravel tuned clutch tension provides smooth and reliable mixed surface shifting Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Derailleur Mount Type: 10x1 Standard Rear Der Shifter Compatibility: Shimano Road Di2 Cage Length: Long Drivetrain Speeds: 11 Weight: 287 Color: Black Chain Wrap Capacity (teeth): 38 Largest Cog: 34