Cobra USA 4-inch Neighbor Hater Slip-On Mufflers for '96-16 FL Models -Chrome 
Loud pipes get you noticed, whether in heavy traffic or out at bike night!
Cobra says the NH Series performance mufflers is not for the faint of heart.
The 4-inch NH Slip-On's are an aggressive slip-on muffler, for those who think loud just isn't good enough...you want to be heard!
These mufflers start as round 4-inch tubes, then bell out to 4.5-inches, for an aggressive and classic design that looks good from any angle.
The muffler tip is then rolled to give them a clean, finished look.
Internally, these NH mufflers have a spun and louvered baffle, 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 unique custom look.
There will also be a quieter core option for those who enjoy the look, don't want to wake the neighbors. ;)