SHIMANO GRX Rear Derailleur 11-speed

SHIMANO GRX – 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 an ON/OFF switch for the chain tensioner. The RD-RX810 rear derailleur is compatible with road cassettes with a 34T low sprocket max.