Skunk2 412-05-1930 06-11 Honda Civic Si Alpha Header

Complement with a genuine Skunk2 MegaPower Exhaust system for maximum exhaust flow. Includes adapter flange gasket and mounting bracket. Race application; eliminates catalytic converter. Skunk2’s 4-2-1 Alpha Series header is manufactured of T-304 stainless steel features equal-length sequentially paired primaries and is compatible with the 2006-2011 Civic Si.