AFE: MACH Force-Xp 3" to 2-1/2" 304 Stainless Steel Axle-Back Exhaust System 15-19 BMW M3/M4 (F80/82/83) L6-3.0L (tt) S55 custom kit this system produced a max

this system produced a max gain of +8 horsepower and +15 ft

3" Inlet / 3" Outlet connection pipes mount directly to the aFe performance Cat-Back P/N: 49-33084 for a full 3" system

- Requires Tune

Modulare B31 forged monoblock wheels are custom made to fit your vehicle

Carbotech™ XP20™ maintains our tradition of having the outstanding release and modulation that has made all other Carbotech™ compounds so successful

AFE: MACH Force-Xp 3" to 2-1/2" 304 Stainless Steel Axle-Back Exhaust System 15-19 BMW M3/M4 (F80/82/83) L6-3.0L (tt) S55 custom kit this system produced a maxAggressive Sound: A free flowing, transverse muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque. The muffler is finished with a high temp powder coated metallic black finish. Exhaust Valve: This Axle back exhaust system incorporates a factory style exhaust valve which uses the factory exhaust valve motor (not included). The valve helps regulate, direct and control the flow of