•  The exhaust system (including the exhaust manifold) has been laid out as straight as possible in order to achieve smooth flow of exhaust gas and maintain high power output. Additionally, a large-bore exhaust pipe and a high-capacity main silencer with an inlet pipe that passes through the center of the main silencer body have been adopted to reduce exhaust resistance.

•  Double wall piping has been adopted for the exhaust manifold to prevent lowering of exhaust gas temperature and facilitates rapid catalyzer activation after cold engine starting for improved exhaust purification.