Shimano has given the Ultegra R8000 rear derailleur an updated design
that pushes road bike capabilities to encompass a broader range of
riding styles. The Shimano Ultegra RX RD-RX800 Derailleur expands
the potential of the Ultegra R8000 by combining chain stabilizing features with
the same performance characteristics found in Shimano’s road drivetrain.
The Shimano Ultegra RX RD-RX805 Rear Derailleur uses Shimano’s SHADOW RD
low profile design, which reduces crash vulnerability while providing
a sleek integrated appearance.
FEATURES
Chain Stabilizer mechanism adopted from mountain bike design
ON/OFF switch
Compatible with current road DUAL CONTROL LEVER
Shimano Shadow RD Plus technology
Max. front difference: 16T
Compatible with 11-speed drivetrains only