Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Mid Cage - 1x12 - 45T Max YGroup_7034271662125 Cons: Available in medium width

Cons: Available in medium width only

Lightweight bonded front hem

MW-10 — 10 mm

The tapered lower leg with stretch mesh inset provides a race-ready fit

Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Mid Cage - 1x12 - 45T Max YGroup_7034271662125 Cons: Available in medium widthWith its integrated chain stabilizer and medium cage, the SHIMANO GRX rear derailleur delivers quieter shifting, better ground clearance and more secure chain management in rough terrain. The RD RX822 SGS is compatible with 10 51T, 12 speed SHIMANO MTB cassettes, and the chain tensioner has an ON OFF switch for easy wheel removal.