Shimano GRX RD-RX820 2x 12-Speed Rear Derailleur 11-36T

BikeTiresDirect$145Buy

The creators who use it, or GearCred, may earn a commission when you buy through these links, at no extra cost to you.

From BikeTiresDirect

The Shimano GRX RD-RX820 12-Speed Rear Derailleur is the heart of their 2x12 Undroppable drivetrain offering both tighter rear cassette gear steps and an ultra-wide range when paired with the RX820 Front Derailleur. | Shimano GRX RD-RX820 2x 12-Speed Rear Derailleur 11-36T