Super 40 Stainless Steel - 3.00 Center In / 2.50 Dual Out - Aggressive Sound 2003-ford-f-250-super-duty-esi3273936 70 Ratio - 31 Spline

70 Ratio - 31 Spline - Iron - Natural - Ford 9 in - Each

7-Liter engine

75in Dish - 3-Spoke - Black Polyurethane Bump Grip - Aluminum - Natural - Each

Wheel Bearing - Inner and Outer - Steel - 5x5 2 in Pin Hubs - Kit

125 in Head - 11/32 in Valve Stem - 5

Super 40 Stainless Steel - 3.00 Center In / 2.50 Dual Out - Aggressive Sound 2003-ford-f-250-super-duty-esi3273936 70 Ratio - 31 SplineThe Super 40 features Flowmaster's Delta Flow technology. It's larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series, but with a deeper tone, and all the benefits of extra performance and low interior resonance from the Delta Flow technology. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.