Offering the benefits of both 4-2-1 and 4-1 header designs, the MFactory hand-made race header is designed with race-use in mind, providing a massive increase in power throughout the rev-range.

Through the innovative Long-Tubed, Stepped-Piping design and Sequentially-Paired primaries, our Manifold / header is specifically designed to increase the efficiency of exhaust gas scavenging and to prevent the backflow of these exhaust gases into the engine.

You will not find another Manifold / header on the market offering gains of up to 20bhp on a basic-tuned vehicle!

Small Bore: 1.6l->1.8l
42.3mm -> 44.3mm -> 47.8mm -> 50.8mm -> 65mm (Collector)

Fitment:

Honda Integra B16A/18C Engine's