At Magnuson we believe you should be able to have big horsepower, drivability, and a long-lasting, reliable product. In fact we’ve been making power you can live with for more than thirty years. We’ve used what we learned to develop Magnuson Supercharger Kits - the best-selling, most complete line of bolt on superchargers anywhere. We test each Magnuson Supercharger before it leaves the factory - resulting in warranty claims that are almost non-existent. However, we fully stand behind our product if a problem should arise.