GRX Rear Derailleur 10-speed (RD-RX400) Swagman side-to-side flex and deeper crampon

side-to-side flex and deeper crampon penetration for an uncompromised stride

Hook/Loop Front Closure

Blundstone unisex sizing

Compact and Versatile

folded into a convenient seat

GRX Rear Derailleur 10-speed (RD-RX400) Swagman side-to-side flex and deeper cramponWith 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. 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 stabilizer ON