Shimano Ultegra RX Shadow Plus RD-RX800 GS 11 Speed Mid-Cage Rear Derailleur Shimano Ultegra RX Shadow Plus RD-RX800 GS 11 Speed Mid-Cage Rear Derailleur

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

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