DeutschTuning proudly offers aFe MACHForce XP Stainless Steel Catback Exhaust System BMW M3 (E92/93). 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. This unique exhaust system uses 2.5" diameter 304 stainless steel that is TIG-welded and has a hand brushed finish. 3.5" diameter polished tips are used for and aggressive yet sporty look. The dual mufflers consist of a single in, dual out, free flowing design, giving an agressive sound at high RPM s, yet maintaining a suttle tone at cruising speeds. This system uses factory mounting locations providing stability and hassle-free installation with no modifications neccessary. 304 Stainless Steel. 304 Stainless Steel Polished Quad Tips. Dual Mufflers. Uses OE Mounting Locations