Shimano GRX RD-RX400 10-Speed Rear Derailleur system_spd This ensures enhanced control and

This ensures enhanced control and confidence

built to transform every journey

It delivers straightforward performance without unnecessary embellishments

or outdoors

How do I clean sealant off my kit

Shimano GRX RD-RX400 10-Speed Rear Derailleur system_spd This ensures enhanced control andThe Shimano GRX RD RX400 rear derailleur is designed for 10 speed drivetrains, delivering reliable and precise shifting across mixed terrains. Its integrated chain stabilizer mechanism ensures consistent performance, even on rough trails or gravel paths. Quieter Rides on Any Surface: Engineered with an innovative chain tensioner, this derailleur reduces chain slap and noise, offering a quieter and more enjoyable ride. The On Off switch allows you to