Abstract: A baffle is provided for a motorcycle muffler to increase the engine horsepower and torque. The baffle includes an elongated pipe with louvered openings, and support members to mount the pipe inside the muffler. The pipe also includes a pair of rods extending spirally along the inner wall of the pipe. The rods are offset 180° from each other. The spiraling rods create an air flow vortex for exhaust gases passing through the baffle, and thereby enhance engine performance.