This exhaust manifold for the 2006-2011 Honda Civic SI 4 Cylinder Engine were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-2-1 Tri-Y off-road racing headers are designed to allow the exhaust gasses to flow more freely from each cylinder and combine in a more efficient manner. Tubing has been optimized for the 2.0L engine. 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.
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Compatible with:
Notes | Year | Make | Model | Trim | Engine |
---|---|---|---|---|---|
2011 | Honda | Civic | Si Coupe 2-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2011 | Honda | Civic | Si Sedan 4-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2010 | Honda | Civic | Si Coupe 2-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2010 | Honda | Civic | Si Sedan 4-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2009 | Honda | Civic | Si Coupe 2-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2009 | Honda | Civic | Si Sedan 4-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2008 | Honda | Civic | MUGEN Si Sedan 4-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2008 | Honda | Civic | Si Coupe 2-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2008 | Honda | Civic | Si Sedan 4-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2007 | Honda | Civic | Si Coupe 2-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2007 | Honda | Civic | Si Sedan 4-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated | |
2006 | Honda | Civic | Si Coupe 2-Door | 2.0L 1998CC 122Cu. In. l4 GAS DOHC Naturally Aspirated |