Pistons - 4.040 in. Bore (in.) - Flat top, with two valve reliefs Piston Style - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Summit Racing™ Pro LS Forged Pistons SUM-2999274040-2

Summit Racing™ Pro LS Forged Pistons SUM-2999274040-2

Pro LS 2618 Forged Piston, 4.040 bore, 1.299 C.H., 2cc Flat, Std. Stroke, 6.125 .927 Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9, Set of 8

Part Number: SUM-2999274040-2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Summit Racing™ Pro LS Forged Pistons SUM-3269454040-2

Pro LS 2618 Forged Piston, 4.040 bore, 1.326 C.H., 2cc Flat, Std. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LQ4 LQ9

Part Number: SUM-3269454040-2

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Speed-Pro Hypereutectic Pistons H860CP40

Pistons, Hypereutectic, Flat, 4.040 in. Bore, 3.75 in. Stroke, Chevy, Set of 8

Part Number: SLP-H860CP40

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

D.S.S. E Series Forged Pistons 8710-4040

Pistons, Forged, Flat, 4.040 in. Bore, 3.750 in. Stroke, 5.700 in. Rod Length, 383 Chevy, Set of 8

Part Number: DMS-8710-4040

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Speed-Pro Hypereutectic Pistons H631CP40

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

Part Number: SLP-H631CP40

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Speed-Pro Forged Pistons L2379F40

Pistons, Forged, Flat, 4.040 in. Bore, Ford, Cleveland, Set of 8

Part Number: SLP-L2379F40

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

D.S.S. E Series Forged Pistons 8700-4040

Pistons, Forged, Flat, 4.040 in. Bore, 350 Chevy, Set of 8

Part Number: DMS-8700-4040

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Summit Racing™ Forged Pro Pistons SUM-SBF347040

Forged Pro pistons 347 stroker Windsor, 4.040 bore, 1.090 C.H., 3.4 in. stroke, 5.400 rod, 5cc flat top Inline and Twisted Wedge, 10.5@60cc, 10:1@64cc

Part Number: SUM-SBF347040

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Mahle PowerPak Piston and Ring Kits 930244740

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

Part Number: MLE-930244740

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

D.S.S. E Series Forged Pistons 8705-4040

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

Part Number: DMS-8705-4040

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

KB Performance Pistons KB107.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Chrysler, Dodge, Plymouth, Set of 8

Part Number: UEM-KB107-040

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

D.S.S. E Series Forged Pistons 8750-4040

Pistons, E-Series, Forged, Flat, 4.040 in. Bore, Ford, Set of 8

Part Number: DMS-8750-4040

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

KB Performance Pistons KB120.040

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

Part Number: UEM-KB120-040

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

D.S.S. E Series Forged Pistons 8715-4040

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

Part Number: DMS-8715-4040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

KB Performance Claimer Pistons 9902HC.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Part Number: UEM-9902HC-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Speed-Pro Hypereutectic Pistons H660CP40

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

Part Number: SLP-H660CP40

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

KB Performance Hyper Piston and Ring Kits KB156KTM.040

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

Part Number: UEM-KB156KTM-040

Not Yet Reviewed

Estimated Ship Date: Dec 3, 2025 if ordered today

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Estimated Ship Date: Dec 3, 2025 if ordered today

ICON Premium Forged Piston and Ring Kits IC792KTD.040

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

Part Number: UEM-IC792KTD-040

Not Yet Reviewed

Estimated Ship Date: Dec 2, 2025 if ordered today

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Estimated Ship Date: Dec 2, 2025 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3970-4040

Piston Set, 400M SBF 400M K1-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.040 bore

Part Number: DMS-K1-3970-4040

Not Yet Reviewed

Estimated Ship Date: Nov 12, 2025 if ordered today

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Estimated Ship Date: Nov 12, 2025 if ordered today

D.S.S. E Series Forged Pistons 8785-4040

Piston Set, 6.0 / LS2 / L98 / LQ9 LS E Series -5cc LS Flat Top Piston Set. 4.040 bore

Part Number: DMS-8785-4040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 12, 2025 if ordered today

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Estimated Ship Date: Nov 12, 2025 if ordered today

D.S.S. E Series Forged Pistons 8720-4040

Pistons, Forged, Flat, 4.040 in. Bore, 302 Ford, Set of 8

Part Number: DMS-8720-4040

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Wiseco Pro Tru Street Pistons PTS503A4

Pistons, Pro Tru Street Pistons, 4.040 in. Bore, Forged, Flat Top, 1/16 in., 1/16 in., 3/16 in. Rings, Chevrolet, Kit

Part Number: WIS-PTS503A4

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Mahle PowerPak Piston and Ring Kits 930200040

Piston and Ring Kit, PowerPak, Forged, Chevrolet, Small Block, Kit

Part Number: MLE-930200040

Not Yet Reviewed

Estimated Ship Date: Nov 11, 2025 if ordered today

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Estimated Ship Date: Nov 11, 2025 if ordered today

KB Performance Claimer Pistons 9906HC.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Part Number: UEM-9906HC-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 2, 2025 if ordered today

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Estimated Ship Date: Dec 2, 2025 if ordered today

KB Performance Pistons KB246.040

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

Part Number: UEM-KB246-040

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025