Shimano GRX Di2 Rear Derailleur (RD-RX815) Groupe one can count on its

one can count on its heat resistance capacities

130 (53t only)

5 and 8mm hex wrenches

Capric/Caprylic Triglycerides

Eagle™ pulley technology provides greater efficiency

Shimano GRX Di2 Rear Derailleur (RD-RX815) Groupe one can count on itsWith 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 compatible with road cassettes with a 34T low sprocket max. Features Silent and