You would be surprised how many riders skip out on a 2-into-1 exhaust system due to a handful of individuals that don't like the appearance of one pipe on the right side but not one on the left. Bassani has taken action and produced a "ghost" pipe that allows for a clean symmetrical look to even everything out. For use with 444-642 Optional Pseudo left-side megaphone mufflers available for Bagger models for that twin muffler look; include matching non-functioning (no baffle) muffler with contrasting black billet flutes end caps