MAD BMW S58 4" Fat Boy Single Midpipe M2 G87 f90 carbon fiber diffuser While it's not the only

While it's not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus

Satin Black Finish for OEM+ Look

Sound & Performance: Enjoy a more engaging driving experience with an enhanced throttle response and a satisfying intake growl

-Available for both the M3 and M4

includes all required hardware

MAD BMW S58 4" Fat Boy Single Midpipe M2 G87 f90 carbon fiber diffuser While it's not the onlyBMW G87 M2 4" FATBOY Midpipe Flow Is Everything Flow is everything, and the new MAD 4" FATBOY Midpipe delivers exactly that for the BMW G87 M2. Designed specifically for the S58 powered G87 platform, this midpipe is built to maximize both performance and sound without compromise. Featuring a full length single 4" center section and maintaining a minimum diameter of 3" throughout, the FATBOY Midpipe ensures optimal exhaust flow and improved throttle