NEW Shimano GRX RD-RX820 Rear Derailleur - 12-Speed, Direct Mount, One Spec, Shadow Plus Design, 36t Max Low variant-size-38 the upgrade kit allows you

the upgrade kit allows you to experience AXS without needing to buy an entire groupset

Hook & Loop

Integrated Hose Keeper

Shimano Rear Derailleur Pulley Assemblies

Cable Style: Non-Coiled

NEW Shimano GRX RD-RX820 Rear Derailleur - 12-Speed, Direct Mount, One Spec, Shadow Plus Design, 36t Max Low variant-size-38 the upgrade kit allows youThe 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