- 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
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Product TypePulley Sets
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DisciplineGravel & Cyclocross
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ColourBlack
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ColourSilver
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SizeOne size
