The CyclingCeramic Aero rear derailleur cage has been specially developed for the Shimano Ultegra R8000 and Dura-Ace R9100 11-speed groupsets (GS & SS versions). Designed for pure performance, it optimises the aerodynamics and efficiency of your drivetrain with a pulley cover to reduce drag at the derailleur, ideal for road cycling and time trials.

Its oversized geometry reduces the chain pivot angle, thereby decreasing mechanical friction and improving pedalling smoothness. The 14/19-tooth aluminium pulleys, featuring ultra-low-friction ceramic bearings, promote more direct power transfer and a quieter drivetrain, even at high intensity.

Machined from aerospace-grade materials with a rigid, lightweight monocoque construction, this hanger ensures perfect alignment under load. The optimised chain path maintains constant tension, ensuring precise and stable shifting across the entire cassette. Hand-assembled in France and individually tested, it is designed to withstand the high stresses and demanding conditions of competition.

Technical specifications:

- CyclingCeramic Aero rear derailleur hanger for Shimano Ultegra R8000 and Dura Ace R9100 GS & SS
- Colour: Black
- Compatible with Shimano 11-speed Ultegra R8000 and Dura-Ace R9100 GS & SS drivetrains
- Oversized 14/19-tooth pulleys
- Very low-friction ceramic bearings
- Monocoque aluminium and carbon cover cage
- Optimal chain tension to reduce mechanical friction
- Assembled and tested in France
- Weight: 137g
- Brand: CyclingCeramic