BDC Sports HHS5504B Polished Stainless Steel 4-2-1 Header ReviewbP PP DC Sports HHS5504B Polished Stainless Steel 4-2-1 Header PDyno tuned and tested against the competition for maximum performancePOne piece design reduces weight by eliminating middle flangesPUnique merge collector design improves ground clearancePEqual length primary piping ensures optimum tuning for more power across RPM rangeP