Shimano RD-RX800, ULTEGRA RX, GS 11-SPEED

The 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 mechanism
• Includes clutch with On/Off switch
• Compatible with current road Dual Control Levers
• Direct Mount Compatible
• Designed for use on 2x11-speed mechanical systems

• Color: Black
• Largest Cog: 34
• Rear Derailleur Mount Type: 10x1 Standard , Shimano Rear Direct Mount
• Chain Wrap Capacity (teeth): 39
• Cage Length: Medium
• Rear Der/Shifter Compatibility: Shimano Road
• Drivetrain Speeds: 11
• Weight: 248

First, you'll get 5% back in store credit to use towards future purchases.

When you purchase through us, you get:

• Advice on whether the bike or product suits your needs.
• A professional build for all bikes, which ensures safety. If there is an issue, we can promise you that 99 out of 100 times, it will be resolved quicker than you can in your garage.
• A build history that becomes a service history, ideally. That can be very helpful if you do have any sort of warranty issue.
• Warranty support - Just contact us and we will guide you through the process.