Abstract: An exhaust assembly having a first combustion gas flow route, a second combustion flow route, and a valve. The first combustion gas flow route includes at least one sound damper. The at least one sound damper is a high-frequency damper adapted to dampen primarily higher frequencies of the frequency spectrum being contained in the combustion gas. The second combustion gas flow route has substantially no sound damping, so that the first and second combustion gas flow routes have different damping characteristics. The valve is operable selectively by an operator and adapted to selectively divide an approximately constant stream of combustion gases from an engine selectively over the first and second combustion gas flow routes, irrespective of the volume of the combustion gase.