ARH - Long Tube Headers & Connecting Pipes (04-06 Pontiac GTO) LT4 It is constructed with 100%

It is constructed with 100% aluminum and is fully TIG-welded utilizing a furnace brazed sealed core

Tested by two of the most respected engine builders in the industry

allowing you to tune the amount of torsional spring rate and determine the handling characteristics (understeer/oversteer) of the vehicle

When looking through the grill opening on other systems

ARH - Long Tube Headers & Connecting Pipes (04-06 Pontiac GTO) LT4 It is constructed with 100%ARH GTO systems are here to make a statement. Manufactured in 304 S S, these headers are available with 1 3 4" or 1 7 8" primaries. Merge collectors with scavenger spikes are standard along with our bullet proof high flow metallic substrate cats. Expect outstanding performance gains throughout the RPM range and a fit and finish second to none .