Mitsubishi Evolution 4-9 4G63 Engine w/ 50mm Portsize Stainless Steel Header Flange Length_1.775" - 1.800" - 5/16-18" Mounting Hole for

- 5/16-18" Mounting Hole for Throttle Bracket (x1)

Aeroflow 4 into 1 merge collectors are made out of T304 stainless steel that is durable enough to stand up to the elements and combine high flow and high velocity to increase and broaden an engines torque curve

15 and 30 metre lengths

Extended Tip:  103mm

They have a range of specific turbos to meet your power goals

Mitsubishi Evolution 4-9 4G63 Engine w/ 50mm Portsize Stainless Steel Header Flange Length_1.775" - 1.800" - 5/16-18" Mounting Hole forCustom build your exhaust or turbo manifold with high quality Aeroflow components. Aeroflow CNC header flanges are manufactured from 9. 5mm (3 8") thick stainless steel. They are precision cut to meet your ports, reduce warping, and prevent leaks. The Aeroflow header flanges are offered in a variety of header flange sizes and shapes to make your cylinder heads and headers manifolds meet your exhaust building needs.