As you may already know, the easiest way to get more power from any force inducted engine is to increase pressure. With a CFM Performance overdrive supercharger crank pulley you can increase pressure anywhere from 2-4psi depending on which supercharger is being used. On average, gains of 30+ whp can be expected from this pulley when used in addition to a custom tune. Made of lightweight billet aluminum and anodized in black for lasting looks. Longer accessory belt is required. NOTE: Will not void supercharger warranty when used with the stock supercharger pulley!