This new exhaust from M4 comes with a merge collector (exhaust box) delete pipe! Now you can get a deep exhaust note and extra performance without spending upwards of $1000 for a full exhaust!
Comes with a True High Flow merge collector to remove the stock muffler box, makes 3 more horsepower, and saves 8.5 lbs over stock. Also comes with a removable quiet insert!
See more information on the M4 Street Slayer Full Kit! The muffler box remover is also sold separately from the stand alone muffler.

