Shimano GRX RD-RX820 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Long Cage - 2x12 - 36T Max YGroup_7033453117485 Stay cool and feel relaxed

Stay cool and feel relaxed with all the coolness of a casual T-shirt hidden in a technical bicycle jersey made especially for women

and superior flex-point comfort

829 Other Patents Pending

6 mm Headtube size 44 mm Stack height 9

Shimano GRX RD-RX820 Shadow+ 12 Speed Rear Derailleur - Rear Derailleur - 12 Speed - Black - Long Cage - 2x12 - 36T Max YGroup_7033453117485 Stay cool and feel relaxedThe RD RX820 is compatible with 11 34T and 11 36T 12 speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12 speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON OFF switch for outings on smooth surfaces.