Designed specifically to address the needs of tuned motors built for high-horsepower applications. Headers stepped 1-3/4″ to 1-7/8″ to 2″. Tapered megaphone-style muffler body with 4″ black billet end cap with contrasting machined flutes. Includes full-coverage heat shields. Oxygen sensor ports and plugs (12 mm and 18 mm). Includes removable baffle. Made in the U.S.A.. Accepts optional Pseudo left-side megaphone mufflers for Bagger models for that twin-muffler look which feature matching non-functioning (no baffle) muffler with black billet end cap and contrasting flutes (not included).