Cobra USA Neighbor Hater Slip-On Mufflers for '17-Up Touring Models - Chrome 
The Neighbor Hater Mufflers by Cobra are just what the name implies, LOUD!
An aggressive slip-on muffler, for those who think loud just isn't good enough.
These mufflers start as round 4 inch tubes, then bell out to 4.5 inches, for an aggressive and 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, but only for 8 inches. This is done in order to produce an aggressive, bark.
At the end of the baffle is a trumpet shaped inner tip that works in harmony with the belled end, creating a custom look.
Made in The U.S.A.