Z4 Superchargers keep the roadster tradition alive. Superchargers add great performance. New Z4 Superchargers add to the performance BMW provides. For more horsepower and torque, get a Supercharger. Add a little flair to your Coupe with new Z4 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.