NEW Shimano GRX RD-RX820 Rear Derailleur - 12-Speed, Direct Mount, One Spec, Shadow Plus Design, 36t Max Low inventory-apparel Extras: Rear rack and fenders

Extras:  Rear rack and fenders

Windblock: No

Head Tube: 125mm

Hardened steel core and Shafts with Stainless Steel drivers and CNC Machined body makes this tool incredibly strong

NEW Shimano GRX RD-RX820 Rear Derailleur - 12-Speed, Direct Mount, One Spec, Shadow Plus Design, 36t Max Low inventory-apparel Extras: Rear rack and fendersThe Shimano RD RX820 rear derailleur 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. This rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. The chain tensioner has an ON OFF switch for outings on smooth surfaces. Silent and secure rear shifting on rough