CHEVROLET Chevy small block Gen III/IV (LS-based engines) Pistons & Piston Rings

Replacement Piston and Components: If not in stock, order MUST be placed to trigger singles. Average ETA of 3 business days if kits are in stock

Part Number: SUM-299S274030-2

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Estimated Ship Date: Today

Piston and Ring Kits, Premium, Forged Aluminum, 4.070 in. Bore, 3.622 in. Stroke, Flat Top, Chevy, LS, Set of 8

Part Number: UEM-IC551CKTS070

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Piston and Ring Kits, Premium, Forged Aluminum, 4.010 in. Bore, 3.622 in. Stroke, Flat Top, Chevy, LS, Set of 8

Part Number: UEM-IC551CKTS010

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Pistons, Premium, Forged 2618 Aluminum, 4.010 in. Bore, 4.000 in. Stroke, Flat Top, Chevy, LS, Set of 8

Part Number: UEM-IC531CA-010

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Estimated Ship Date: Jan 29, 2026 if ordered today

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Pistons, Hypereutectic, Dish, 101.6mm Bore, 1.5mm, 1.5mm, 3.0mm Ring Grooves, Chevy, Set of 8

Part Number: UEM-3473HC-STD

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Piston and Ring Kits, Premium, Forged Aluminum, 4.070 in. Bore, 4.000 in. Stroke, Flat Top, Chevy, LS, Set of 8

Part Number: UEM-IC552CKTS070

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Pistons, FX-Series, Forged, 5.00cc Flat, 4.165 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2940-4165

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged, 6.00cc Dome, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2832-4030

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged, 5.00cc Flat, 4.155 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2920-4155

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged, 6.00cc Dome, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2922-4030

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged, 6.00cc Dome, 4.060 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2922-4060

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged, 6.00cc Dome, 4.075 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2922-4075

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged, 29.00cc Dish, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-2-2925-4030

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Piston and Ring Kits, Premium, Forged Aluminum, 4.065 in. Bore, 4.000 in. Stroke, Flat Top, Chevy, LS, Set of 8

Part Number: UEM-IC552CKTS065

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Estimated Ship Date: Jan 29, 2026 if ordered today

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Pistons, OE Replacement, Flat, Cast Aluminum, GM LS, 6.2L, V8, Set of 8

Part Number: MAH-2243760WR050

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Pistons, Forged, 4.125 in. Bore, 4.000 in. Stroke, Dish Top, 6.125 in. Rod Length, 0.927 in. Pin Diameter, LS7 12 degree, Chevy, Set of 8

Part Number: PIS-1000752

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Pistons, Hypereutectic, 3.908 in. Bore, Flat, 1.330 in. Compression Height, Press-Fit Pin, 1.5mm x 1.5mm x 3.0mm Rg. Grooves, Chevy, Pontiac, Set of 8

Part Number: UEM-3498HC-25MM

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Estimated Ship Date: Jan 29, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 5.00cc Flat, 4.125 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2940-4125

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 5.00cc Flat, 4.065 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2830-4065

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 6.00cc Dome, 4.005 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2832-4005

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 6.00cc Dome, 4.040 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2832-4040

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 5.00cc Flat, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2920-4030

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 6.00cc Dome, 4.075 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2942-4075

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 5.00cc Flat, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2880-4030

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Pistons, FX-Series, Forged 4032, 5.00cc Flat, 4.040 in. Bore, Chevy LS, Set of 8

Part Number: DMS-1-2820-4040

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Estimated Ship Date: Jan 12, 2026 if ordered today

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