B Series Megaphone Header 4-1 Collector RF V2 B16 B18 B20

B Series Megaphone Header 4-1 Collector RF V2 B16 B18 B20 RMF Skid Plate Pipe The B Series Megaphone Header 4-1 Collector RF V2 is designed for Honda B Series engines including the B16, B18, and B20. This header features a 4-1 design that merges the exhaust gases from four cylinders into a single collector, resulting in improved exhaust flow and a significant boost in horsepower and torque. The RF V2 version includes a unique megaphone design that enhances exhaust note, giving your engine a distinct, aggressive sound. Made from high-quality materials and expertly crafted, this header is the perfect upgrade for anyone looking to take their B Series engine to the next level of performance. RMF Version 2 header features a true 4-1 merge collector, with a megaphone to create equal exhaust flow & delivers the best peak horsepower gains while utilizing a 1-piece design.     304 brushed stainless steel     True 2.5 inch collector     Megaphone with reverse cone     Hand TIG welded     A/C and P/S compatible (slim fans required)     CNC machined manifold flange     One year warranty     18 gauge, 304 stainless steel     Includes OEM spec header gasket     Includes OEM spec donut gasket     One piece design     Includes skid plate     Half core radiator must be used     Recommended for 1.8L-2.0L engine displacements