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JE Pistons Pro Mod Style GP 18 Degree Pistons

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Designed for Pro Mod style engines, JE Pistons Pro Mod style GP 18 degree pistons are specifically designed for nitrous applications. Their precision CNC-machined ring grooves are designed for .043 backcut, 1/16, 1/16, 3/16 rings. Their compression heights are figured at zero deck clearance. These pistons will only fit Big Chief cylinder heads.

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JE Pistons Pro Mod Style GP 18 Degree Pistons 194964S

JE Pistons Pro Mod Style GP 18 Degree Pistons 194964S

Piston, 18-Degree, Forged, Dome, 2-Valve Reliefs, 4.600 in. Bore, 4.250 in. Stroke, 6.535 in. Rod, 1.140 in. Compression, Chevy, Each

Part Number: JEP-194964-1

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

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