Cobra 3 NH Slip-On Mufflers For Harley Sportster The all favored Neighbor Haters have been minimized into a 3 to accommodate for your H-D Sportster. So if you're looking to get the most sound out of your Sportster and do not want a full system, these slip-ons are your answer. Features: Cobra's new 3 Neighbor Hater mufflers turn that quiet engine into something all your friends will envy Direct bolt-on for 1986-2003 Sportster models, providing a great new sound for your bike 3 muffler body flares out to 3.25 at rear Inner tip finishes off the rear, and adds sound 2 spun-louvered baffle creates back pressure and accelerates exhaust gases Chrome has limited Lifetime Warranty