Features Improves Engine Output and Efficiency, Gives you extra HPs, and increases torque Large diameter and free flow tubing for unrestricted flow, Making the exhaust air flow smooth, Designed for high-performance racing All joints are TIG welded to prevent cracking and wear CNC Machine Flange for MAX Strength and Durability Flanges chrome plated for corrosion resistance Fitment 2010-2014 BMW 535i & 535ix F10 & F11 3.0L 2010-2014 BMW 535i GT & 535ix Gran Turismo F07 3.0L 2012-2015 BMW 640i/640ix F06 F12 & F13 Coupe & Convertible 3.0L 2013-2015 BMW 740Li F01 3.0L