RD-RX825/RX820 GRX rear mech pulley set
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 Product Type Pulley Sets Discipline Gravel & Cyclocross Colour Black Colour Silver Size One size
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