Shimano GRX Di2 RD-RX827 Rear Derailleur 12 Speed SW Only Fits 188 disc hub only

Fits 188 disc hub only and cannot be used on 900

For the seriously weight conscious road bike user

It also offers space for provisions and gear

Volume Per Stroke 20 Cc

UnLock System

Shimano GRX Di2 RD-RX827 Rear Derailleur 12 Speed SW Only Fits 188 disc hub onlyWith components specifically designed for 1x12 speed drivetrain systems, the GRX series is celebrating its debut in the completely wireless shifting segment. The focus is on the RD RX827 rear derailleur, which is based on the wireless models of the XTR M9250 series. The 1 speed concept is complemented by the BL RX825 brake lever and the WH RX810 wheels. Equipped like this, gravel athletes can experience what ultimate reliability means on any terrain