Sign up for
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
Engineered to answer the increasing demand for less friction, speed and a more efficient drivetrain, the Oversized Pulley Wheel System (OSPW System) represents true advancement in cycling performance. It consists of 17-tooth alloy pulley wheels fitted with CeramicSpeed bearings, a specially designed lightweight cage made from polyamide and carbon fiber, finished with titanium bolts. Compatible with Shimano 10s-11s groupsets, this innovative system is proven to reduce friction in the pulleys by 60% or more in some cases; it delivers watt savings from 2.4 watts and 3-5 times longer lifetime compared to the most commonly used high-end 11s stock pulleys.