1. Aluminum pulleys and carbon plates: The oversized CyclingCeramic pulleys feature precisely machined aluminum pulleys combined with lightweight and durable carbon plates. This combination of materials ensures a significant weight reduction while providing superior strength, perfectly suited for road cycling demands. Their sleek and aerodynamic design improves the overall drivetrain aerodynamics, helping you gain speed and efficiency.
2. Ceramic bearing technology: The ceramic bearings of the oversized CyclingCeramic pulleys are specifically designed for Shimano Dura Ace 9250 DI2 and Ultegra 8150 DI2 derailleurs. With these high-quality bearings, you will benefit from a significant reduction in friction during gear changes, resulting in smoother shifting and remarkable energy savings. Enjoy a more efficient pedaling experience, optimizing your performance during climbs and sprints.
3. Tested by Frictions Facts: Derailleurs with CyclingCeramic Pulleys bearings have undergone rigorous testing by Frictions Facts, an independent laboratory specializing in friction and drivetrain efficiency analysis in cycling. Test results confirmed that CyclingCeramic ceramic bearings are among the fastest on the market, with measured friction as low as 0.033w These exceptional performances ensure an ultra-efficient drivetrain, allowing you to gain speed and precision during your pedaling.

Compatibility: The oversized CyclingCeramic pulleys are perfectly compatible with Shimano Dura Ace 9250 DI2 and Ultegra 8150 DI2 derailleurs, providing you with a tailored solution to enhance your drivetrain performance.

Give your Shimano DI2 derailleur a competitive edge with oversized CyclingCeramic pulleys. Experience smooth shifting, improved responsiveness, and increased durability during your rides. Choose excellence and push your limits with CyclingCeramic!

Compatible with Shimano Dura Ace 9250 and Ultegra 8150

Specifications:

• Pulleys: CyclingCeramic 14-tooth upper and 19-tooth lower
• Pulley material: machined aluminum made in France
• Cage material: UD carbon
• Bearings: handmade ceramic bearings
• Compatibility:  Shimano Dura Ace 9250 DI2 and Ultegra 8150 DI2
• Cassette compatibility: suitable for 12-speed cassettes from 11 to 34 teeth.
• Spring tension settings: 2 springs
• Speed: 12 speed
• Weight: 67 grams

• Complete OSPW system for Shimano Dura Ace 9250 DI2 and Ultegra 8150 DI2
• CyclingCeramic Oil for Pulley Bearings, 15 ml dropper bottle
• Assembly instructions
• Sticker sheet