Shimano GRX DI2 RD-RX815 Long Cage 11-Speed Rear Derailleur

SHIMANO 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 compatible with road cassettes with a 34T low sprocket max.