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The Diamond Eye 4-inch 90° stainless steel stack extension elbow is a mandrel-bent exhaust component intended for diesel and performance exhaust work. Constructed from 409 stainless, it maintains internal diameter for smooth flow and offers resistance to heat and corrosion. Diamond Eye's CNC mandrel bending ensures consistent fit and geometry for custom stacks, repairs, or fabricated exhaust routing.
Diamond Eye 4in SS 90* ELBOW
