Mid Pipes Active Autowerke Active Autowerke BMW M3 M4 F80 F82 Equal Length Mid Pipe "non Resonated Active Autowerke G80 G82 M3 M4 Signature Single Mid Pipe Enhanced Active Autowerke G80 M3 G82 M4 mid pipe with X Pipe. 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 Autowerkes 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.