Pulley and cage oversize shimano Dura Ace 9100 11s 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 pulley with 13 upper and lower 19 teeth in aluminum with CeramicSpeed bearings to reduce friction created during pedaling to a minimum.
- For shimano Dura Ace 9100 11s rear derailleur
- 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.
- Real weight: 70 g