Bmw 3 Series 1999-2004 3.2 Exhaust Header. Looking to get the most out of your high reving, high performance motor? Designed to make power from 4000 rpm to redline without losing power on the bottom end. Option Racing headers feature a trapezoidal merge collection to increase ground clearance without sacrificing performance. The near equal length primaries CNC mandrel bent tubing and true merge collector ensures performance.