Shimano GRX RD-RX400 Rear Derailleur 10 Speed 36T Max Medium Cage Shadow+ Nutrition An optimized hood shape fits

An optimized hood shape fits all hand sizes for comfortable

clamping force and extremely low weight allows for an unparalleled component

which has a noticeably positive effect when riding out of the saddle

Fully light-weight

8” (W) WEIGHT (APPROX) 10 kg / 22 lb (Case only)

Shimano GRX RD-RX400 Rear Derailleur 10 Speed 36T Max Medium Cage Shadow+ Nutrition An optimized hood shape fitsWith 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