Shimano RD-RX400 GRX Rear Mech Pulley Set

Shimano RD-RX400 GRX Rear Mech Pulley Set The RD-RX400 pulley set is a direct replacement for Shimano's GRX gravel groupset rear derailleur. These precision-engineered pulleys maintain smooth, reliable shifting across your cassette whilst reducing drivetrain noise and wear. Designed for the demands of gravel and adventure cycling, they're compatible with RX400 models and deliver consistent performance in mixed terrain conditions. Essential maintenance component for keeping your GRX drivetrain running at peak efficiency.