Rear derailleur pulley wheels Shimano GRX RX820 12s

The Shimano GRX RX820 pulley set is designed to restore the proper function of the RX820 12-speed rear derailleur. The 11T and 13T wheels provide smooth chain guidance, silent operation, and reliable gear changes, even on demanding gravel routes.

• Manufacturer: Shimano
• Model / Series: GRX RX820
• Product Type: Rear derailleur pulley set (Pulley Set)
• Usage: Gravel
• Compatibility: Shimano GRX RX820 rear derailleur
• Technology / System: Shimano GRX / 12-speed
• Material: High-strength synthetic material
• Gear compatibility: 12s
• Number of Teeth: 11T (upper) / 13T (lower)
• Color: Black
• Weight: 20 g