These pulleys are designed to fit Rotrex centrifugal superchargers and are available in a range of different diameters (70, 75, 80, 85, 90, 100, 105, 110) which can be used to alter the speed of the charger for more or less boost. Attention must be made to the specifications of your supercharger model to ensure the maximum RPM is not exceeded.
- Direct fit for Rotrex centrifugal superchargers
- Wide range of diameters available
- Allows the speed of the charger to be altered for different boost and power output
- Made in Steel
To calculate the correct pulley diameter apply the relative information from the supercharger specifications to this formula ensuring the maximum supercharger RPM is not exceeded: Max engine RPM x Crank pulley Diameter x Supercharger ratio Ã· Pulley diameter