Bassani Xhaust Road Rage II B1 Black Power Exhaust System 1V38RB Designed specifically to address the needs of tuned motors built for high horsepower applications Uses a unique extended inner collector maximizing performance Features 2-into-1 equal-length stepped headpipes; systems for Dyna feature 2-step headers, 1 3/4in. to 1 3/8in.; systems for V-Rod feature 3-step headers, 1 3/4in. to 1 7/8in. to 2in. 4in. straight-style performance muffler body with 2 1/2in. x 16 1/2in. baffle and billet end cap with contrasting machined flutes