Product Features

 2006+ Honda Civic Si Header with Metal Core High FlowCat. Converter
 Engineered to make power, these headers
feature large diameter T304 Stainless Steel
mandrel bent primaries and precision CNC
machined Stainless Steel flanges that are
hand ported for smooth exhaust flow.  They
also feature a huge 2.5” diameter outlet,
which is the perfect compliment to our 2.5”
diameter cat-back systems, although they
will work with the stock exhaust system
as well