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JE Pistons Big Block Flat Top Pistons 257989

Pistons, Forged, Flat Top, Single Valve Relief, 4.320 in. Bore, 3.766 in. Stroke, 6.135 in. Rod, 1.765 in. Compression, Chevy, Set of 8

Part Number: JEP-257989-8

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Pistons, Forged, Dome, 2-Valve Reliefs, 4.320 in. Bore, 4.250 in. Stroke, 6.385 in. Rod, 1.270 in. Compression, Chevy, Set of 8

Part Number: JEP-258244-8

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Estimated Ship Date: Oct 15, 2025 if ordered today

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Estimated Ship Date: Oct 15, 2025 if ordered today