Shimano RD-RX825/RX820 GRX Rear Mech Pulley Jockey Wheels

GRX rear derailleur replacement guide and tension pulley set

Suitable for GRX RD-RX825 and RD-RX820 rear derailleur

Its recommended that you replace your derailleur pulley wheels periodically for the best shifting performance

Set comprises of two pulley wheels and is a genuine Shimano replacement part