Oversize pulleys and cage for Shimano Dura Ace 9100 11-speed black

- Developed and entirely designed by CeramicSpeed, the OSPW system for Sram allows you to achieve the best performance on every occasion.
- Innovative and high-quality materials
- Oversize pulley with 13-tooth upper and 19-tooth lower in aluminum with CeramicSpeed bearings that minimize friction created during pedaling.
- For Shimano Dura Ace 9100 11-speed black rear derailleurs
- Total power saving between 30% and 60%
- Lifespan 3-5 times longer than standard pulleys offered on the market.
- Compatible with cassettes with a maximum sprocket of 32 teeth.
- Actual weight: 70 g