ScienceofSpeed manufactured pulleys are made for Comptech Autorotor 1.7L Supercharger and ScienceofSpeed 2.1L Kenne Bell Systems. The smaller pulleys allow increased pressure for additional performance when used with additional fueling and engine control components.
Horsepower increases up to 20-40 hp depending on the pulley selected. Smaller pulleys are not compatible with Comptech fuel system. Engine management and fuel system upgrade required.
Pulleys are precision machined from lightweight 6061 aluminum and feature a special anodized black coating that prevents wear and increases belt traction.
Note that measurements are taken on the top of the pulley teeth (please see diagram) not on the face.
Pressure ratings are estimated and depend on a variety of factors including supercharger system efficiency, displacement, and ambient air density. Not all combinations have been tested.
These pulleys do not fit Comptech Whipple or ScienceofSpeed TVS Superchargers.