Shimano GRX RD-RX825 Di2 Rear Derailleur - 12-Speed, Long Cage, With Clutch, For 2x, Black lubricant Compatible with Shimano Models: BR-M820

Compatible with Shimano Models: BR-M820

Included tool stop helps keep the tire repair plug in place and eases plug tool removal

A Shadow RD+ chain stabilizer prevents chain slapping and drops

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Shimano GRX RD-RX825 Di2 Rear Derailleur - 12-Speed, Long Cage, With Clutch, For 2x, Black lubricant Compatible with Shimano Models: BR-M820Shimano's GRX RX825 Di2 12 speed rear derailleur features a built in wireless connectivity unit and charging port, ensuring fast and reliable shifting for mixed terrain riding and easy recharging. Integrated Shadow RD+ technology prevents chain slap and ensures precise shifting even on rough terrain. Thanks to built in ON OFF switch, wheel removal is easy too. The RD RX825 is compatible with 11 34t and 11 36t 12 speed cassettes and supports Full or