Intake efficiency is further enhanced by the Kawasaki Twin Ram Air Induction system. Scoops at the front of the fairing supply cool air directly to the airbox, and at highway speeds this becomes pressurized to help pack more fuel mixture from the 36mm Keihin carburetors into the cylinders. A digital ignition system ignites the mixture as its microprocessor-controlled timing is ultra-responsive to engine speed and the system never needs adjustment. Burned gasses exit the engine through twin mufflers for smooth power throughout the rev range.