Airflow benefits from having a smooth, straight path in order to maximize efficiency. The inlet area of a centrifugal supercharger benefits greatly from having an extended surface area to help the incoming air remain turbulence-free. These velocity rings from DMC Racing are proven to add up to 2psi of boost to your ProCharger F-1R supercharger.
• smooth inlet radius into supercharger
• CNC-machined for exact fit