GRX rear derailleur replacement guide and tension pulley set
Suitable for GRX RD-RX400 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
Product Type: Pulley Sets
Discipline: Gravel & Cyclocross
Colour: Black
Colour: Silver
Size: One size