- The smallest stage contains the Rotrex C30-94 supercharger, which delivers a maximum output of around 350hp.
- The middle stage is operated with a larger Rotrex C38-91 supercharger, which delivers approx. 480hp maximum power (500hp for the M3).
- The large stage uses the largest Rotrex C38R supercharger, which delivers up to 600hp here. The maximum possible increase in performance through a supercharger (650hp for the M3).