Shimano GRX 812 1 x 11 Speed Rear Derailleur Axle Size_12 x 135mm and 29" wheel sizes and

and 29" wheel sizes and 120mm

Includes one barrel adjuster and mounting bolts

Water resistant when USB cover sealed (IP65)

the result is the same: the most dynamic ride ever

Shimano GRX 812 1 x 11 Speed Rear Derailleur Axle Size_12 x 135mm and 29" wheel sizes andShimano GRX 812 1 x 11 Speed Rear Derailleur The RX812 is specially engineered to conquer all the challenges of gravel riding, as it gives you smooth shifting performance. Whether you're riding after work with your friends or taking on an exciting new adventure, this 11 speed model has you covered. Dominate on every ride thanks to its incredibly versatile chain stabiliser which prevents chain slapping and drops as you shift. Shimano has also installed