We've decided to offer the very flanges that we use to the public for those who are looking to design their own header or turbo manifold. Machined from hot-rolled mild steel and descaled for easy welding.

CNC machined ports provide a smooth transition

CNC machined recess is incorporated to properly align Sch10 pipe

These are designed for the 2002-2006 QR25DE

Nissan QR25DE Premium Flange - Exhaust