Shimano Grx Rd-Rx400 Rear Derailleur 10-Speed Accessory Cord on any mountain

on any mountain

for swapping stories about the ones that didn’t get away

Virtually Seamless™ Toe for enhanced comfort

It’s your new best friend

Shimano Grx Rd-Rx400 Rear Derailleur 10-Speed Accessory Cord on any mountainSHIMANO GRX Rear Derailleur SHIMANO SHADOW RD+ 10 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. FEATURES: Silent and uninterrupted rear shifting on rough terrain >>Adjustable chain stabilizer prevents chain slapping and drops SHIMANO SHADOW