Entirely developed, designed and produced in Denmark by CeramicSpeed, the Oversized Pulley Wheel System is a technologic advance for the cycling industry.
Matching the highest quality materials with a unique design, the OSPW System delivers lower friction and longer lifetime, improving your competitive advantage. Thanks to the OSPW System, the power savings start at 40%, and the CeramicSpeed Bearings inside guarantee a 3-5 times longer longevity compared to commonly used standard pulleys on the market. The watt savings with a CeramicSpeed OSPW System start at 1.6 watts.
The OSPW system derailluers is compatible up to a 32 tooth cassette size. The product is for 11 speed  and is not compatible with 12 speed. 
In The Box
Oversized Pulley Wheel System
CeramicSpeed Bearing Oil in 15ml dropper bottle
Sticker sheet