Shimano RD-RX800, ULTEGRA RX, GS 11-SPEEDThe Ultegra RX Rear Derailleur brings Shimanos' chain stabilizing technology road cycling drivetrains, delivering smooth and precise shifting over technical terrain. It expands road bike capabilities, inspiring confidence on any surface and drives the evolution of road cycling to include greater elements of adventure. The Ultegra RX Rear Derailleur is available in 11 speed Mechanical or Di2 compatible options. Shimano Shadow RD+ chain stabilizer

Weight: 241

Optimized design to work seamlessly with 12-speed chainring tooth profiles

The straps are also nylon and wider than usual

Eyeglass grippers

Robust cage is crafted from carbon reinforced polyamide for durability and light weight

1000km/month - 1800km

maintaining optimal steering performance and stability

air-travelsafe package

The 105 BR-R7170 caliper features the Shimano Flat Mount System and its low-profile design that is ideal for road bikes

SideLoaders are for seat tube mount

Highlights Coolfit™ anti-microbial padding

making it an essential component for endurance athletes and time trialists who require reliable hydration solutions integrated seamlessly with their high-performance Cervelo bikes