Cobra USA COB-6107 4" Neighbor Hater Slip-On Mufflers Chrome for Touring 95-16/Trike 17-20Features & Benefits: Our Neighbor Hater Mufflers are not for the faint of heart. These are an aggressive slip on muffler, for those who think loud just isnt good enough. They have to sound good too. Good and loud! These mufflers start as round 4 inch tubes, then bell out to 4. 5 inches, for an aggressive & classic design at the rear. The muffler tip is then rolled to give them a clean, finished look. Internally, these NH mufflers have a perforated,