Pistons - 4.040 in. Bore (in.) - 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 )

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Summit Racing™ Pro LS Forged Pistons SUM-1109274040-8

Pro LS 2618 Forged Piston, 4.040 bore, 1.110 C.H., 8cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Cathedral/Rect., 6.0 LY6 LQ4 LQ9, Set of 8

Part Number: SUM-1109274040-8

4.5 out of 5 stars ( 2 )

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Summit Racing™ Pro LS Forged Pistons SUM-3269434040-2

Pro LS 2618 Forged Piston, 4.040 bore, 1.326 C.H., 2cc Flat, Std. Stroke, Full Float Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9, Set of 8

Part Number: SUM-3269434040-2

5.0 out of 5 stars ( 1 )

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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

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Summit Racing™ Forged Pro Pistons SUM-SBC383040

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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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

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Mahle PowerPak Plus Piston and Ring Kits 930245140

Pistons, PowerPak Plus, Forged 2618 Aluminum, 4.040 in. Bore, Flat Top, Rings Included, Ford, Small Block, Set of 8

Part Number: MLE-930245140

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

Trick Flow® Forged Pistons TFS-51404110-40

Piston, Forged, Dish, 4.040 in. Bore, Ford, Set of 8

Part Number: TFS-51404110-40

5.0 out of 5 stars ( 1 )

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Mahle PowerPak Piston Kits 930203840

Piston and Ring Kit, PowerPak, USRA Factory Stock Rule, 4.040 in. Bore, 3.500 in. Stroke, 5.700 in. Rod, Flat Top, Forged, Chevrolet, Small Block, Kit

Part Number: MLE-930203840

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

KB Performance Hyper Piston and Ring Kits KB115KTM.040

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

Part Number: UEM-KB115KTM-040

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

D.S.S. SX-Series Forged Piston and Ring Kits K8113-4040

Piston Set, 350 SBC SX Series -13cc Dish Top Piston Set. 4.040 bore

Part Number: DMS-K8113-4040

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

D.S.S. SX-Series Forged Pistons 8856-4040

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

Part Number: DMS-8856-4040

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

D.S.S. SX-Series Forged Pistons 8133-4040

Pistons, SX-Series, Forged, Dish, 4.040 in. Bore, Chevy, Set of 8

Part Number: DMS-8133-4040

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

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

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D.S.S. SX-Series Forged Pistons 1920-4040

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

Part Number: DMS-1920-4040

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

Summit Racing™ Forged Pro Pistons SUM-SBC383040L

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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D.S.S. FX-Series Forged 2618 Alloy Pistons 2-3166-4040

Piston Set, 347 Stroker SBF 289 - 302 2-FX Series +6cc Dome Top inline Piston Set. 4.040 bore

Part Number: DMS-2-3166-4040

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

ICON Premium Forged Pistons IC978.040

Pistons, Premium Forged, Flat Top, 4.040 in. Bore, Chevy, Small Block, Set of 8

Part Number: UEM-IC978-040

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ICON Premium Forged Piston and Ring Kits IC729KTD.040

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

Part Number: UEM-IC729KTD-040

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Mahle PowerPak Piston and Ring Kits 930244140

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

Part Number: MLE-930244140

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

JE Pistons Pistons 139633

Pistons, Forged, Dish, 2-Valve Reliefs, 4.040 in. Bore, 3.480 in. Stroke, 5.700 in. Rod, 1.560 in. Compression, Chevy, Set of 8

Part Number: JEP-139633

Not Yet Reviewed

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

D.S.S. SX-Series Forged Pistons 8125-4040

Piston, SX-Series, Forged, Dish Top, 4.040 in. Bore, Chevy, Set of 8

Part Number: DMS-8125-4040

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

Summit Racing™ Forged Pro Pistons SUM-SBC327040

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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Estimated Ship Date: Tomorrow