Long Cage Rear Derailleur (12-speed)

GRX RD-RX827-SGS

The new GRX RX827 long-cage derailleur brings full wireless 1x-12 shifting to gravel bikes.

It features built-in Automatic Impact Recovery, an impact-deflecting shape, and simple covered-pulley solutions. The derailleur stands up to harsh trail impacts and still retains its lightning-quick shifting speed and top-level performance.

The derailleur is 1x-only, and not compatible with any 2x12 Di2. It only works with the BT-DN320 battery, which is held in place inside the derailleur. The battery is taken off the derailleur for charging.

All 12-speed wireless road / gravel shfiters are compatible, as well as the 12-speed MTB shifters.

RD Protection Function: The new Automatic Impact Recovery function instantly returns the derailleur to its original position after impact. Protected Battery: Tucked safely inside an enclosed space, the battery won’t budge even in rough terrain, while remaining completely removable for charging.

Battery charging

Charging these batteries is easy - you take out the battery, pop it in the charger, and that's it. After about an hour the battery will be fully charged, and you're good to go.