The Oversized Pulley Cage (OSPW) Carbon Ceramic Derailleur is specifically designed for Shimano Ultegra and Dura-Ace 11-speed derailleurs. Developed by our engineering team to deliver a superior riding experience, it optimizes drivetrain efficiency, installs easily, and adds a personalized touch of color to your bicycle. Hand-assembled with the highest quality materials, it combines an ultralight construction with extreme durability, ensuring more precise shifts and top-level performance for both professional cyclists and enthusiasts.

Features and Innovations:

Premium Materials: Made with top-tier materials to guarantee maximum long-term durability without maintenance needs: ultralight carbon fiber, 7075 aluminum pulleys, and full-ceramic sealed bearings.
Pulley Configuration: The system includes two oversized 7075 aluminum pulleys, 14-tooth (upper) and 17-tooth (lower) respectively.

Installation and Maintenance:

Compatibility Note: Shimano Ultegra RX 800 and 805 derailleurs are not compatible with this model; for these versions, please refer to our Carbon Ceramic Derailleur cage specifically for Shimano GRX 810 / 815.
Cassette: It is recommended to use a cassette with a maximum of 32 teeth to ensure optimal adjustments and shifts.
Chain: To ensure maximum performance, a new chain must be used during installation, adding 2-4 extra links compared to the previous configuration.
Longevity and Lubrication: The design features full-ceramic sealed bearings protected by dedicated aluminum covers, designed to maximize lifespan and minimize concerns related to technical maintenance. The system operates completely dry: no grease or lubricants are required.
Cleaning: Thanks to the fully ceramic composition, the bearings are completely immune to oxidation. In case of debris buildup between the covers and bearings during use, a simple wash with water or degreaser is sufficient.
Important Warning: As these bearings are designed to run dry, NEVER apply any type of lubricant.

Technical Specifications:

Compatibility: Shimano Ultegra RD-8000 / 8050 (Di2) and Dura-Ace RD-9100 / 9150 (Di2) 11-speed.
Pulley Configuration: 14 teeth and 17 teeth.
Cage Material: Ultralight carbon fiber.
Pulley Material: 7075 aluminum.
Bearing Type: Full-ceramic dry sealed bearings.
Weight: 68 g.