If you’re looking for all out horsepower for your supercharged Cobra, Whipple is what you need! At nearly 3.4 liters of air per revolution, the Whipple Supercharger gives you the ability to produce more power than any other positive displacement supercharger available today. With its enormous flow potential, the Whipple can produce more power per lb of boost by taking less HP to operate and dramatically cooler temps. From 15psi to 30psi, the Whipple Pulley Cobra system will give you all the ability you could ever crave. Want to add some boost to your new Whipple?? Then you'll need one of these Whipple made supercharger pulleys. Please specify which size pulley you want when ordering.