Witness the intersection of engineering precision and unparalleled style. The Blackbird 450 Slip-Ons will elevate your Milwaukee-Eight Bagger to new heights of style and performance. Inspired by the sleek sophistication of jet engine exhausts; the Blackbird 450s feature 4.5" tapering billet end caps with internally machined channels and a CNC milled logos on the outboard sides. But it’s not just about looks; Vance & Hines took the all important roar to the next level. The Blackbird 450 Slip-ons features the most aggressive baffle core; specially designed for the M8 engines. Feel the authentic thunder and power as you open the throttle; making your iconic American V-Twin as exhilarating as riders experienced Harley-Davidson for over a century.- Massive 4.5-inch muffler bodies - Tapered machined billet end caps - Chrome plated muffler housing - Black contrast finish end caps