BMW Catback Exhaust Systems

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.

DETAILS:

• +12 HP and +10 lbs. x ft. Torque max gains
• 3" - 2-1/2" mandrel bent, 304 stainless steel for maximum flow
• High flow, transverse muffler with a high-temp powder-coated black finish
• Dual 4" diameter polished stainless steel exhaust tips
• Includes factory style exhaust valve (using factory motor, not included)
• Optional resonator delete pipe is available PN 49-36622
• 100% hand TIG-welded for strength and durability

Performance Gains:
Data coming soon!

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" Polished Tips:
Finishing off this system are dual 4" diameter, polished stainless steel 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.

Resonator Delete Pipe:
An optional resonator delete pipe is compatible with this exhaust system (not included, sold separately) aFe part number: 49-36622 (No cutting or fabrication required).

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.

Emissions Disclaimer:
This product does not require a CARB EO# (CARB Aftermarket Parts Verification Guidelines).

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

This system is constructed of 2.50" diameter, mandrel bent, TIG-welded, 304 stainless steel, brushed finish tubing and uses all factory mounting locations for an approximate 1 hour install time. In recent testing, this exhaust system produced 12 horsepower and 11 lbs. x ft. of torque. This unique system utilizes 3.5" diameter 304 polished laser etched quad tips that fit perfectly in your stock bumper cutouts.

304 Stainless Steel:
This unique exhaust system uses 2.5" diameter 304 Stainless Steel that is TIG-welded and has a hand brushed finish.

304 Stainless Steel Polished Quad Tips:
3.5" diameter polished tips are used for and aggressive yet sporty look.

Dual Mufflers:
The dual mufflers consist of a single in, dual out, free flowing design, giving an aggressive sound at high RPM's, yet maintaining a subtle tone at cruising speeds.

Uses OE Mounting Locations:
This system uses factory mounting locations providing stability and hassle-free installation with no modifications necessary.

Does not require CARB certification