Introducing the new aFe Power MACH Force XP cat back exhaust system for the 07-13 BMW 328i E92 & E93 non-turbo. In recent testing, this system produced 4 horsepower and 8 lbs. x ft. of torque. This exhaust is constructed from 2.5in. brushed finish, mandrel bent, 304 stainless steel and is TIG-welded. A high flow, 304 stainless steel, single in dual o ut muffler was used to maximize performance across the power band while maintaining a great tone. To finish off this exhaust are dual, aFe laser etched, 3in. polished 304 stainless steel tips. This exhaust uses all factory hanger locations. Note: Cutting is required and should be performed by a skilled technician.