Stepped headers merge into a 3-1/2 short straight muffler body with Hot Rod turnout end cap. 1-3/4 head pipe steps to 1-7/8 into the collector to increase flow and improve performance. Removable spiral-core louvered baffle included. Hand MIG welding. 18mm and 12mm O2 ports with adapters and plugs. Includes mounting hardware. Full heat shields included. Made in the U.S.A..
