GRX RD-RX825 Di2 Rear Derailleur - 12-Speed, Long Cage, With Clutch, For 2x, Black E-city / active and highly breathable

and highly breathable

Adjustable hem with drawcord

Body Geometry touchpoints take the sting out of saddle time with their ergonomically designed

Titanium alloy cleat nuts can rotate to position pedal/cleats 5mm rearward

The bolt heads have been upgraded to a larger size and the clamping area features unique surface contouring for superior handlebar grip

GRX RD-RX825 Di2 Rear Derailleur - 12-Speed, Long Cage, With Clutch, For 2x, Black E-city / active and highly breathableShimano'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