fast conditions or a front tyre for short-track events and less technical trails

Time in the saddle: Great for extended rides

This is a drop fit or integrated headset top half

the resulting seat is a sleek

IS: 51mm International Standard

Shimano GRX RD-RX822 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Mid Cage - 1x12 - 45T Max PLP|Model Year fast conditions or a frontWith 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.