Upgrade the sound of your BMW M3 & M4 , eliminate the back pressure from your stock midpipe and most importantly, get the deepest tone from our exhuast. Rasp and drone free! The MAD S58 single midpipe is guaranteed to fit on the BMW G80 M3 & G82/ G83 M4. The exhaust brace is included with every midpipe for a hassle-free install and spot on fitment. Features: Smooth bends for maximum airflow without any drone Lifetime warranty on defects and fitment 90 day return period All orders ship in 1-2 business days Spot on fitment Fitment: 2021+ BMW G80 M3 2021+ BMW G82 M4