Shimano Ultegra RD-R8050

The Shimano Ultegra RD-R8050 is a masterpiece of 11-speed electronic shifting, offering a nearly identical performance profile to the flagship Dura-Ace model at a more accessible weight-to-value ratio. Utilizing the Shadow RD low-profile design, the derailleur stays tucked close to the frame, significantly reducing the risk of damage during crashes or transport while improving aerodynamic efficiency. This Di2 unit delivers instantaneous, stress-free gear changes with the simple click of a button, maintaining perfect alignment even under heavy climbing loads. Fully compatible with Shimano’s E-TUBE software, it allows riders to customize shift speeds and utilize Synchronized Shifting for a more intuitive riding experience.

Key Features

• Shadow RD Architecture: Low-profile design ensures stable shifting performance and protects the derailleur body from external impacts.

• Di2 Precision: Eliminates the maintenance and stretching associated with traditional mechanical cables for "set-and-forget" shifting accuracy.

• Customizable Synchro Shift: Can be programmed to automatically adjust the front derailleur when shifting the rear, maintaining an optimal chain line.

• Versatile Cage Options: Available in SS (Short Cage) for standard road setups and GS (Medium Cage) for those requiring wider gear ranges.

• Consistent Shifting: High-torque motors ensure the pulley cage moves precisely to the correct position every time, regardless of weather or terrain.

Specifications

• Drivetrain Speeds: 11-Speed Di2

• Maximum Low Sprocket: 30T (SS) / 34T (GS)

• Minimum Low Sprocket: 25T (SS) / 28T (GS)

• Total Capacity: 33T (SS) / 39T (GS)

• Connectivity: Wired (EW-SD50)

• Material: Aluminum/GFRP

Typical Components Included

• RD-R8050 Rear Derailleur

• B-Axle Washer

• User Manual