This is the first cat-back exhaust system without a muffler -- it uses Sound Wave Altering Technology (SWAT) to cancel high-pitched sound waves and eliminate passenger compartment drone. The oversized (3"), brushed, 304 stainless steel pipes are mandrel bent for maximum flow. The increased pipe size and smooth curves reduce restrictions and keep exhaust gasses flowing smoothly. Other features include:
- OE-style flange and hangers for ease of installation.
- Weighs just 21 lb -- 15 lb lighter than stock.
- Dual, stainless steel tips, polished to a mirror finish.
- 304 stainless steel has a much higher chromium and nickel content which results in much greater resistance to oxidation that the 409 stainless steel version.
When used in combination with aFe's Super Stock air intake kit (#55-11470), it adds 11.5 hp and 9.5 ftlb of torque.
advanced FLOW engineering, inc. (aFe Power) is a manufacturer of high performance automotive cold air intake systems, performance air filters, fluid filters, throttle spacers, turbochargers, intercoolers, differential cover, transmission pans, headers and exhaust systems. aFe is headquartered in Corona, California in two facilities totaling 164,000 sq. ft. including their 77,000 sq. ft. headquarters and manufacturing facility. An 87,000 sq. ft. warehouse and R&D facility was added in 2012.
aFe's product line up currently includes over 2,300 part numbers, which are all designed, developed and manufactured in their Corona, CA location. aFe Power puts a great deal of focus on the BMW category with one of the most complete lines of performance products for BMW. The aFe Power product line-up includes performance air filters, cold air intake systems and exhaust systems. Many members of the aFe Power team, including their president, are BMW enthusiasts and you will find dozens of new products for various BMW applications launched every year.
Everything we sell comes with a minimum 12-month warranty and a 100% satisfaction guarantee. In addition, products that carry the Bavarian Autosport brand come with a minimum 2-year warranty against defects in materials and workmanship. (Some have lifetime warranties!) If you are unhappy with a product's quality or performance, simply let us know. We'll make it right. Call Customer Service at 800.535.2002, option 7, or e-mail CustomerService@bavauto.com.