Vance &amp, Hines Vance & Hines Monster Duals Complete Exhaust 16855 Designed exclusively for the new Dyna Switchback, Vance & Hines introduces complete exhaust systems that bring the classic look of true duals to the Switchback, paired with either Twin Slash Round or Monster Round slip-on mufflers Feature beautifully crafted chrome plated mounting brackets for the mufflers that look great on the Switchback even when riding without the saddlebags All Switchback Duals feature full-coverage heat shields over the head pipes 4in. Round Twin Slash slip on mufflers are marked by the signature V&H twin slash end treatment and put out a nice aggressive rumble that can be toned down with optional sound inserts (sold separately) 4in. Monster Round slip-on mufflers with CNC-machined billet end caps pulse with the same deep rich tone as Monster Rounds on Touring models