For over four decades, Active Autowerke has led the BMW performance industry with precision-engineered exhaust systems designed to unleash power and refine sound. The F8X Single Mid Pipe with F-Brace continues this legacy — combining performance, tone, and craftsmanship in one powerful upgrade for your F80 M3 or F82/F83 M4.
The factory mid-pipe restricts exhaust flow and contributes to the high-pitched “weed eater” tone often associated with the S55 engine. Active Autowerke’s single 3.5” oval mid-pipe design corrects these issues by improving flow, deepening tone, and maintaining ground clearance — all while delivering measurable gains in horsepower and torque.
Available with resonated connecting pipes for a smoother, more refined sound, this system offers the perfect balance between daily drivability and race-inspired performance.
Key Features
- Gains of +18 WHP and +30 lb-ft torque (with Active rear exhaust)
- Single 3.5” mid-pipe design for unrestricted flow
- Deeper, throatier exhaust tone – eliminates factory “weed eater” sound
- Lighter and more efficient than stock
- Quicker turbo spool and improved low-to-mid RPM response
- Precision fitment with OEM mounting points
- Optional resonated version for reduced rasp
Dyno Results
Setup: Active Autowerke Mid Pipe + Active Rear Exhaust
- Stock: 380 WHP / 371 WTQ
- Active System: 398 WHP / 401 WTQ
Note:
Active Autowerke Full Exhaust System is recommended for off-road or racing applications.
Unleash the full potential of your F8X M3/M4 — with the signature power, tone, and precision only Active Autowerke can deliver.
