The exhaust manifold found in the 1984-1991 BMW E30 chassis was designed to combine the exhaust gasses from each of the 6 cylinders quickly with a manifold that was cost effective to produce. Our long tube off-road header is a Tri-Y design to allow the exhaust gasses to flow more freely from each of the 6 cylinders and combine in a more efficient manner. Tubing has been optimized for the 2.5L and 2.7L engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.Package Included:1 x Set of Header Exhaust System with Y-PipeCompatible with:BMW 325 (1986-88)BMW 325e (1984-87)BMW 325es (1986-87)BMW 325i (1987-91)BMW 325is (1987-91)BMW 325iX (1988-91)
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