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Forged Pro pistons for SB Chevy 327, 4.040 bore, 1.671 C.H., 3.25 in. stroke, 5.7 in. rod, 0cc net vol. dome. 11:1@58cc, 10.2@64cc, 9.8@67cc, 9.3@72cc

Part Number: SUM-SBC327040

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Pistons, Forged, Dome with Two Valve Reliefs, 4.040 in. Bore, Chevy, Small Block, Set of 8

Part Number: SLP-L2166AF40

5.0 out of 5 stars ( 1 )

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Pistons, Forged, Flat, 4.040 in. Bore, Chevy, Set of 8

Part Number: SLP-L2165F40

5.0 out of 5 stars ( 1 )

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Pistons, Hypereutectic, Flat, 4.040 in. Bore, Chevy, Set of 8

Part Number: SLP-H660CP40

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PISTON/RING KIT

Part Number: DMS-K1-2200-4040

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Piston, Cast Flat Top, 4.040 in. Bore, Chevy, Checker, Set of 8

Part Number: SLP-310AP40

5.0 out of 5 stars ( 1 )

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Pistons, Hypereutectic, Dish, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB355-040

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Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Piston and Ring Kit, Hypereutectic, Dish, 4.040 in. Bore, Ford, Small Block, Kit

Part Number: UEM-KB355KTD-040

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Estimated Ship Date: Nov 30, 2026 if ordered today

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Pistons, Hypereutectic, Dome with 2 Valve Reliefs, 4.040 in. Bore, w/Wrist Pins/Retainers, for 3.250 in. Stroke/5.700 in. Rods, Chevy, 327, Set of 8

Part Number: UEM-KB157-040

5.0 out of 5 stars ( 1 )

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Pistons, Forged, 4.040 in. Bore, 3.250 in. Stroke, Flat Top, 5.400 in. Rod Length, 0.927 in. Pin Diameter, SBF 302 20 degree, Ford, Set of 8

Part Number: PIS-1000342

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Estimated Ship Date: Jan 6, 2027 if ordered today

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Estimated Ship Date: Jan 6, 2027 if ordered today

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Chevy, Set of 8

Part Number: UEM-KB156-040

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Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Piston Set, 331 Stroker SBF 289 - 302 K2-FX Series -4cc Flat Top inline Piston Set. 4.040 bore

Part Number: DMS-K2-3250-4040

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Estimated Ship Date: Nov 9, 2026 if ordered today

Piston and Ring Kit, Forged, Dome, 4.040 in. Bore, Ford, Small Block, Kit

Part Number: UEM-IC740KTD-040

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Estimated Ship Date: Nov 27, 2026 if ordered today

Piston Set, 331 Stroker SBF 289 - 302 2-FX Series -13cc Dish Top Inline / Twisted Wedge Piston Set. 4.040 bore

Part Number: DMS-2-3256-4040

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB155KTM-040

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB155KTD-040

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Piston Set, 331 Stroker SBF 289 - 302 K1-FX Series +6cc Dome Top Twisted Wedge Piston Set. 4.040 bore

Part Number: DMS-K1-3268-4040

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Pistons, AutoTec SBF, 4.04, 3.25, Inverted Dome/Milled Dish 5.4, 0.927, SBF 302 20°, Sold as a set of 8.

Part Number: PIS-1000383

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Estimated Ship Date: Jan 6, 2027 if ordered today

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Estimated Ship Date: Jan 6, 2027 if ordered today

Piston Set, 331 Stroker SBF 289 - 302 K1-FX Series -4cc Flat Top inline Piston Set. 4.040 bore

Part Number: DMS-K1-3250-4040

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Piston Set, 331 Stroker SBF 289 - 302 K1-FX Series -5cc Flat Top Inline/ Twisted Wedge Piston Set. 4.040 bore

Part Number: DMS-K1-3251-4040

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Piston Set, Boss 331 Stroker SBF 289 - 302 K2-FX Series -13cc Dish Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-K2-3271-4040

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Estimated Ship Date: Nov 9, 2026 if ordered today

Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB157KTM-040

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Estimated Ship Date: Nov 27, 2026 if ordered today

Piston and Ring Kit, Forged, Flat, 4.040 in. Bore, Ford, Small Block, Kit

Part Number: UEM-IC720KTD-040

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Estimated Ship Date: Nov 27, 2026 if ordered today

Piston Set, Boss 331 Stroker SBF 289 - 302 K2-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Piston Set. 4.040 bore

Part Number: DMS-K2-3275-4040

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Estimated Ship Date: Nov 9, 2026 if ordered today

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Estimated Ship Date: Nov 9, 2026 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB154KTD-040

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Estimated Ship Date: Nov 27, 2026 if ordered today