Pulley and cage oversize shimano 10 / 11v black

- Developed and designed entirely by CeramicSpeed, the OSPW system for Sram allows to obtain the best performances in every occasion.
- Innovative and high quality materials
- Oversized 17-toothed aluminum pulleys with CeramicSpeed bearings that minimize friction created during pedaling.
- For Shimano 10v and 11v Ultegra or Dura Ace rear derailleurs
- Total power saving between 30% and 60%
- Duration 3-5 times higher than standard pulleys offered by the market.
- Compatible with cassettes with maximum 32 tooth sprocket.
- Upper and lower pulley17D
- Real weight: 70 g