aFe MACHForce XP 08-13 BMW 135i L6-2.0L N54/N55 3in. 304 SS Axle-Back Exhaust w/Black Tips Suspension>Shock & Spring Kits increasing the air pressure in

increasing the air pressure in the combustion chamber resulting in increased horsepower

There's no need to worry about changes in load or road conditions -- you can make on-the-go changes from inside the cab

The AEM 21-730C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing

This system is constructed of 1-7/8" - 2-1/8"- 2-3/4” mandrel-bent 304 stainless steel tubing for maximum strength

eliminating any issues users might face

aFe MACHForce XP 08-13 BMW 135i L6-2.0L N54/N55 3in. 304 SS Axle-Back Exhaust w/Black Tips Suspension>Shock & Spring Kits increasing the air pressure inThe Mach Force XP cat back exhaust system produces 11 hp and 10 lbs. ft. of torque. constructed from 2. 75 in. mandrel bent 304 hand brushed stainless steel and utilizes a unique crossover pipe that helps to equalize exhaust pressure and tunes the exhaust pulse. Comes with dual 3. 5 in. polished 304 stainless steel tips and muffler to build a mellow yet powerful sound. Engineered and manufactured in our Corona Ca manufacturing facility. All systems