Navigate your next trip a little better with Rainer Superchargers. Superchargers add great performance. Update your SUV with Rainer Superchargers. For more horsepower and torque, get a Supercharger. We carry a full line of Rainer Superchargers. Superchargers are great add-ons for cars and trucks that need extra towing or passing power. Superchargers are a fantastic addition to your ride.