Designed to increase boost on Magnuson supercharger installs on C5 Corvette and Radix Truck applications.
Pulley Boys Six Groove Keyed Pulley for Radix Style Side (Jack) Shaft Supercharger Kits
04-06 LS1/LS2 GTO
04-08 Cadillac CTS-V
Ford F-150 3-Valve
Any pulley smaller than 3.0" for this application will have to have the supercharger snout machined down in order for the pulley to fit properly.