Shimano GRX RD-RX400 Rear Derailleur 10 Speed 36T Max Medium Cage Shadow+ Nutrition GX Transmission Flattop chain

GX Transmission Flattop chain

XX SL Transmission is the evolution of SRAM's World Champion

clamping force and extremely low weight allows for an unparalleled component

Integrated NFC Medical ID and RECCO®

allowing cyclists to easily explore new routes with confidence

Shimano GRX RD-RX400 Rear Derailleur 10 Speed 36T Max Medium Cage Shadow+ Nutrition GX Transmission Flattop chainWith 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. FEATURES Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping and drops SHIMANO SHADOW RD+ Smooth and reliable mixed surface shifting Switch