Fitment Information BMW E46 M3 (2001, 2002, 2003, 2004, 2005, 2006) Emissions Compliance This exhaust does not alter, replace, or modify any emissions equipment. Specs & Features 2.5" Axle Back Exhaust Polished Muffler with Quad Tips T-304 Stainless Steel This is a direct bolt on exhaust to the E92 M3.  This will not fit the E93 due to the extra bracing for the E93 and will not fit the E90.  Great way to add a deep and throaty sound to your S65 V8! Redline360 is an authorized Megan Racing dealer and sells only genuine and authentic Megan Racing Products.