Active Autowerke Single Mid Pipe with F-Brace - F8X M3 / M4

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