Speed-Pro forged pistons are made from extruded VMS-75 aluminum alloy that's forged under 3,000 tons of pressure to near-net shape. After that, they're machined to their final configuration. These pistons offer excellent strength and durability—and are capable of taking the punishment that's dished out on the street and in competition. They're available for a wide variety of applications, including OE replacements and all-out racing engines.

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SPEED PRO Pistons, Each Forged, Flat, 4.090 in. Bore, BB For Ford 390ci Flat Top, Each (Minimum Order Qty 8)

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SPEED PRO Pistons, Each Forged, Flat, 4.050 in. Bore, BB For Ford 390ci Flat Top, Each (Minimum Order Qty 8)

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