A triple-baffled muffler enables an engine sound that changes from very quiet when idling to louder as the throttle is pressed. The muffler provides three baffles which are hinged over the center of the muffler. The exhaust pressure travels through the muffler and pushes the baffles until they open to release the pressure. The angle of incidence of the baffles on their hinges governs the loudness of the sound.