Pistons - 4.000 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-3269454000-2

Pro LS 2618 Forged Piston, 4.000 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-3269454000-2

4.67 out of 5 stars ( 3 )

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-3269434000-2

Pro LS 2618 Forged Piston, 4.000 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-3269434000-2

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

Summit Racing™ Pro LS Forged Pistons SUM-2999274000-2

Summit Racing™ Pro LS Forged Pistons SUM-2999274000-2

Pro LS 2618 Forged Piston, 4.000 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-2999274000-2

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025

Summit Racing™ Coated Forged Pistons SUM-17407C

Pistons, Forged Aluminum, Flat, 4.000 in. Bore, 1.304 in. Compression Height, 0.927 in. Pin, Chevy, LS, Set of 8

Part Number: SUM-17407C

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 H1506CPA

Pistons, Hypereutectic, Chevy, GMC, 6.0 LS, Set of 8

Part Number: SLP-H1506CPA

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 8700-4000

Pistons, Forged, Flat, 4.000 in. Bore, 350 Chevy, Set of 8

Part Number: DMS-8700-4000

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

KB Performance Pistons KB107.STD

Pistons, Hypereutectic, Flat, 4.000 in. Bore, Chrysler, Set of 8

Part Number: UEM-KB107-STD

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

KB Performance Claimer Piston and Ring Kits 9902HCKTM.STD

Piston and Ring Kit, Claimer, Hypereutectic, Flat, 4.000 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-9902HCKTMSTD

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 8720-4000

Pistons, Forged, Flat, 4.000 in. Bore, 302 Ford, Set of 8

Part Number: DMS-8720-4000

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

ICON FHR Series Pistons for GM LS IC9992C.STD

Pistons, FHR Coated, Forged 4032 Aluminum, Flat Top with Two Reliefs, 4.000 in. Bore, 0.927 in. Wrist Pin, GM, LS, 6.0/6.2L, Set

Part Number: UEM-IC9992C-STD

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 H860CP

Pistons, Hypereutectic, Flat, 4.000 in. Bore, 3.75 in. Stroke, Chevy, Set of 8

Part Number: SLP-H860CP

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.STD

Pistons, Hypereutectic, Flat, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Part Number: UEM-9902HC-STD

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 Pistons KB151.STD

Pistons, Hypereutectic, Flat, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB151-STD

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 H631CP

Pistons, Hypereutectic, Flat, 4.000 in. Bore, Chevy, Set of 8

Part Number: SLP-H631CP

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

D.S.S. E Series Forged Pistons 8750-4000

Pistons, E-Series, Forged, Flat, 4.000 in. Bore, Ford, Set of 8

Part Number: DMS-8750-4000

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

D.S.S. E Series Forged Piston and Ring Kits K8700-4000

Piston Set, 350 SBC E Series -4cc Flat Top Piston Set. 4.000 bore

Part Number: DMS-K8700-4000

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 8785-4000

Piston Set, 6.0 / LS2 / L98 / LQ9 LS E Series -5cc LS Flat Top Piston Set. 4.000 bore

Part Number: DMS-8785-4000

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

KB Performance Pistons KB246.STD

Pistons, Hypereutectic, Flat, 4.000 in. Bore, Ford, Set of 8

Part Number: UEM-KB246-STD

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

KB Performance Hyper Piston and Ring Kits KB151KTM.STD

Piston and Ring Kit, Hypereutectic, Flat, 4.000 in. Bore, Ford, Kit

Part Number: UEM-KB151KTM-STD

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Dec 2, 2025 if ordered today

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Estimated Ship Date: Dec 2, 2025 if ordered today

ICON Premium Forged Piston and Ring Kits IC744KTD.STD

Piston and Ring Kit, Forged, Flat, 4.000 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-IC744KTD-STD

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 Pistons 1-3550-4000

Piston Set, 351W / 5.8 SBF 351W 1-FX Series -4cc Flat Top Inline Piston Set. 4.000 bore

Part Number: DMS-1-3550-4000

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

KB Performance Claimer Piston and Ring Kits 9906HCKTM.STD

Piston and Ring Kit, Claimer, Hypereutectic, Flat, 4.000 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-9906HCKTMSTD

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. E Series Forged Piston and Ring Kits K8715-4000

Piston Set, 383 SBC E Series -4cc Flat Top Piston Set. 4.000 bore

Part Number: DMS-K8715-4000

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

KB Performance Hyper Piston and Ring Kits KB115KTM.STD

Piston and Ring Kit, Hypereutectic, Flat, 4.000 in. Bore, Ford, Small Block, Kit

Part Number: UEM-KB115KTM-STD

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

ICON FHR Series Pistons for GM LS IC9991C.STD

Pistons, FHR Coated, Forged 4032 Aluminum, Flat Top with Two Reliefs, 4.000 in. Bore, 0.927 in. Wrist Pin, GM, LS, 6.0/6.2L, Set

Part Number: UEM-IC9991C-STD

Not Yet Reviewed

Estimated Ship Date: Monday 10/27/2025

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Estimated Ship Date: Monday 10/27/2025