Mandrel Bent 321 Stainless Tubing
Purge TIG welded
Made with pride in the USA!
35% larger primaries, 77% larger main
Includes New Gaskets, Studs, Nuts, Bolts.
Includes bungs for the factory primary o2 sensors, all emission equipment is left untouched, no check engine lights.
These will bolt up to either the factory untouched cylinder heads and also our reworked cylinder heads. They will also bolt up on the outlet end to either the factory downpipes or our performance downpipes.
Optional Thermal coating is a reflective heat barrier coating that offers an effective method for controlling thermal engine issues. It is applied internally and externally for ideal effectiveness. The use of this coating on the exhaust manifolds has benefits of negating the need for a heat shield, protecting the stainless from fatigue (strengthening the manifold), and also maintains high exhaust gas temperatures, creating faster travel and better scavenging. It is highly recommended on these manifolds! The thermal coatings may change color over time, although the pigment may change color, the thermal properties remain.