1991 Pistons & Piston Rings

Piston, Dome, 4.280 in. Bore, 4.250 in. Stroke, 6.385 in. Rod Length, 1.5mm, 1.5mm, 3.0mm Ring Grooves, Chevy Big Block, Set of 8.

Part Number: PIS-1000307

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Piston and Ring Kit, PowerPak Plus, Forged, Ford, Small Block, Windsor, Kit

Part Number: MLE-930245825

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Estimated Ship Date: Feb 26, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, Dish, 4.060 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB102KTD-060

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Estimated Ship Date: Mar 18, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, Flat, 4.060 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB100KTM-060

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Pistons, Forged, Flat, 4.280 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Big Block, Set of 8

Part Number: UEM-IC9952-030

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Pistons, Hypereutectic, Flat, 4.020 in. Bore, Ford, SBF, Set of 8

Part Number: SUM-17302C-20

1.0 out of 5 stars ( 1 )

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Pistons, Forged, Flat, 4.060 in. Bore, 302 Ford, Set of 8

Part Number: DMS-8720-4060

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Estimated Ship Date: Feb 26, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, Flat, 4.060 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB253KTD-060

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Estimated Ship Date: Mar 18, 2026 if ordered today

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PISTON KIT

Part Number: DMS-K8720-4030

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Estimated Ship Date: Feb 26, 2026 if ordered today

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Piston Rings, Plasma-moly, 4.070 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: HSN-2M139070

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Pistons, Hypereutectic, Flat, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Part Number: UEM-9908HC-060

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Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, L8, V8, Set of 8

Part Number: HSN-2M8542

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Pistons, Hypereutectic, Chevy 350, Dish, 4.000 in. Bore, Each

Part Number: SLP-WH423DCP

4.75 out of 5 stars ( 4 )

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Piston and Ring Kit, Forged, Dome, 4.280 in. Bore, Chevy, Big Block, Kit

Part Number: UEM-IC782KTD-030

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Piston and Ring Kit, Forged, Flat, 4.400 in. Bore, Ford, Big Block, Kit

Part Number: UEM-IC859KTD-040

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Piston and Ring Kit, Forged, 4.040 in. Bore, Ford, Kit

Part Number: MLE-930244740

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Piston Rings, Phosphate Coated, 4.059 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: HSN-139060

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Forged Pro pistons for Chrysler 360, 4.030 bore, 1.670 C.H., 3.580 in. stroke, 6.123 in. rod, 7cc flat top 10.8@60cc, 10.4@63cc, 10.2@65cc, 9.4@73cc.

Part Number: SUM-SBM360030

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Piston and Ring Kit, Hypereutectic, Dome, 4.280 in. Bore, Chevy, Big Block, Kit

Part Number: UEM-KB203KTM-030

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Pistons, Cast, Flat, 3.940 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Set of 8

Part Number: UEM-3247-030

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Piston Rings, Premium Ductile Ring Sets, 0.040 in. Oversize, 4.039 in. Bore, Plasma-moly, 1/16 in., 1/16 in., 3/16 in. Thickness, L8, V8, Set of 8

Part Number: HSN-2M5523040

5.0 out of 5 stars ( 1 )

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Piston Rings, Cast Iron, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-251KC30

4.75 out of 5 stars ( 4 )

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Forged Pro pistons for 383 Stroker Chevy, 4.040 bore, 1.425 C.H., 3.75 in. stroke, 5.7 in. rod, 9cc reverse dome 10.5@64cc, 10.1@67cc, 9.7@72cc.

Part Number: SUM-SBC383040

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Forged Pro pistons for 383 Stroker Chevy Long Rod, 4.040 bore, 1.125 C.H., 3.75 in. stroke, 6 in. rod, 9cc reverse dome 10.5@64cc, 10.1@67cc, 9.7@72cc

Part Number: SUM-SBC383040L

5.0 out of 5 stars ( 1 )

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Piston, Pro Tru Street Series, 23 Degree Head, 4.040 in. Bore, Forged Aluminum, Chevrolet, 350, Set of 8

Part Number: WIS-PTS502A4

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Estimated Ship Date: Mar 4, 2026 if ordered today

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