RD-RX815/RX810 GRX rear mech pulley set

GRX rear derailleur replacement guide and tension pulley set

• Suitable for GRX RD-RX815 and RD-RX810 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