Active Autowerke F8X BMW M3 & M4 Equal Length Mid Pipe includes Active F - brace (11-055)

Active Autowerke F8X BMW M3 & M4 Equal Length Mid Pipe includes Active F - brace (11-055)The Active Autowerke F8X BMW M3 & M4 Equal Length Mid Pipe is engineered to correct the exhaust pulse disparity caused by unequal downpipe lengths on the S55 engine. This patented solution equalizes exhaust pipe lengths before the crossover, delivering a more balanced and refined six cylinder exhaust note distinct from the typical "S55 sound." Designed specifically for the F80 M3 and F82 M4, this mid pipe integrates seamlessly and delivers noticeable

The Active Autowerke F8X BMW M3 & M4 Equal Length Mid Pipe is engineered to correct the exhaust pulse disparity caused by unequal downpipe lengths on the S55 engine. This patented solution equalizes exhaust pipe lengths before the crossover, delivering a more balanced and refined six-cylinder exhaust note distinct from the typical "S55 sound." Designed specifically for the F80 M3 and F82 M4, this mid-pipe integrates seamlessly and delivers noticeable sound difference under throttle.

• Corrects downpipe length variance for balanced exhaust pulses
• Patented sinusoidal crossover design for smooth sound blending
• Lighter than factory mid-pipe system
• Quicker turbo spool response
• Improved low-end and mid-range power delivery
• Exact fitment for F80 M3 and F82 M4

Note: It is strongly recommended that vehicles equipped with catless (straight-through) downpipes use the resonator option with this equal length midpipe.