The aFe MACH Force-Xp cat-back exhaust system for the BMW N55 delivers uncompromising quality and performance.  3"- 2-1/2" mandrel bent 304 stainless steel tubing and high flow transverse muffler offers optimum exhaust flow and incorporates a factory style exhaust valve to control the exhaust note at all throttle inputs. The system utilizes the factory valve motor and factory performance modes. Closed, it directs the exhaust through the high flow muffler for a smooth, tuned exhaust note. When opened, the exhaust bypasses the muffler to unleash the full performance potential and aggressive note from your N55. Large 4" diameter polished stainless steel exhaust tips come with a laser-etched aFe POWER logo for a stylish finish.

Performance Gains:

• +12 HP and +10 lbs. x ft. Torque max gains

304 Stainless Steel Construction:

3" into 2-1/2" mandrel bent 304 stainless steel tubing for maximum performance, corrosion resistance, durability and overall breath-taking appearance.

High-Flow Performance Muffler:

Featuring a corrosion resistant high temp. metallic black powder-coat this high flow, transverse stainless steel muffler improves sound and performance gains across the power band.

Dual 4" Tips:

Finishing off this system are dual 4" diameter, polished stainless steel or black exhaust tips. The tips come with a laser-etched aFe power logo for a custom, stylish finish.

Exhaust Valve:

Incorporated is a factory style exhaust valve which uses the factory exhaust valve motor (not included). The valve helps regulate, direct and control the flow of exhaust gases by opening, closing, or partially obstructing passageways depending on throttle position and factory performance mode for maximum performance.

TIG-Welded:

100% TIG-Welded by certified craftsmen for race proven strength and durability.

Hassle-Free Installation:

This exhaust system is designed to be a true bolt on system with no cutting or modifications required. Quality hardware is included for a hassle-free installation.

Note:

Will NOT fit xDrive (AWD) Models.

Legality:

This part does not require a CARB EO#. Read more here.

All aFe exhaust systems are engineered and manufactured in their Corona, California facility.