FLOWTECH's Afterburner Turbo Chamber Headers represent the first new major design change in exhaust technology in decades. This designs combines the race-proven 4 into 1 design with the torque managing capabilities of a Tri-Y header. The turbo chamber helps smooth out exhaust turbulence for increased performance and a broad power curve. This header is coated in a high temperature electrostatic gray finish. Features: Premium high-temperature black finish Horsepower and Torque increased over conventional header design Big 3 secondary collector for reduced back pressure Tuned-length primary tubes combine with Velocity Tube to smooth out exhaust pulses Patented Velocity Tube increases cylinder scavenging All hardware and premium gaskets included for a complete installation