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ARM Motorsports 4.5" Midpipe | G80 M3 · M3 Competition · G82 · G83 M4 · M4 Competition | 3.0L Turbo I6 [S58]The ARM S58 4. 5" Single Midpipe upgrade is designed to unleash the incredible exhaust sounds from your G8X M3 M4. By removing the secondary catalysts and two middle resonators, the ARM S58 Single Midpipe substantially improves the sound of your S58 powered BMW. Also, by retaining the OEM muffler, you still have the ability to control the exhaust valves, allowing you to close them for a more subtle tone for when you want to be quiet, or open the

Requires absolutely no cutting or trimming

Makes driveshaft carrier installation easier

COBB Tuning Logo White Pocket T-Shirt

With an open expansion slot you can purchase our stage 3 pump module or Stage 3

A fuel bowl adaptor (to be welded onto your factory fuel rail) will house the included 4

that anyone can install in their home garage and start taking advantage of the benefits right away

Incredible value

Attractive appearance

300-500HP & 4000-7500RPM ranges

Genuine OEM actuators

the NEUSPEED K04 HI-FLO Turbo Discharge Pipe replaces the restrictive EO plastic pipe on the outlet side of the turbocharger

distinctive note at wide open throttle due to our use of a single 3″ primary