GRX Di2 RD-RX815 2x11 Spd. Sram Clearance we've engineered the DUB spindle

we've engineered the DUB spindle to be the one true unifying component

NEW SLIDING DUSTCOVER

Forged alloy construction

Additional contact point on handlebar increases stiffness by 10% vs BL-M8000

GRX Di2 RD-RX815 2x11 Spd. Sram Clearance we've engineered the DUB spindleSHIMANO GRX DI2 Rear Derailleur SHIMANO SHADOW RD+ 34T max low sprocket 11 speed With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX815 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is