Pistons - 4.005 in. Bore (in.) - Free Shipping on Orders Over $109 at Summit Racing

Summit Racing™ Pro LS Forged Pistons SUM-2999274005-2

Summit Racing™ Pro LS Forged Pistons SUM-2999274005-2

Pro LS 2618 Forged Piston, 4.005 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-2999274005-2

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Summit Racing™ Pro LS Forged Pistons SUM-299927400512

Pro LS 2618 Forged Piston, 4.005 bore, 1.299 C.H., 12cc Dish, Std. Stroke, 6.125 .927 Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9,Set of 8

Part Number: SUM-299927400512

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Summit Racing™ Pro LS Forged Pistons SUM-1109274005-8

Pro LS 2618 Forged Piston, 4.005 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-1109274005-8

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Summit Racing™ Pro LS Forged Pistons SUM-3269454005-2

Pro LS 2618 Forged Piston, 4.005 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-3269454005-2

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

ICON FHR Series Pistons for GM LS IC9992C.005

Pistons, FHR Coated, Forged 4032 Aluminum, Flat Top with Two Reliefs, 4.005 in. Bore, 0.927 in. Wrist Pin, GM, LS, 6.0/6.2L, Set

Part Number: UEM-IC9992C-005

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Summit Racing™ Pro LS Forged Pistons SUM-3269434005-2

Pro LS 2618 Forged Piston, 4.005 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-3269434005-2

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

ICON FHR Series Pistons for GM LS IC9991C.005

Pistons, FHR Coated, Forged 4032 Aluminum, Flat Top with Two Reliefs, 4.005 in. Bore, 0.927 in. Wrist Pin, GM, LS, 6.0/6.2L, Set

Part Number: UEM-IC9991C-005

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

KB Performance Hyper Piston and Ring Kits KB319KTD.005

Piston and Ring Kit, Hypereutectic, Dish, 4.005 in. Bore, Ford, Small Block, Kit

Part Number: UEM-KB319KTD-005

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Summit Racing™ Pro LS Forged Pistons SUM-326945400512

Pro LS 2618 Forged Piston, 4.005 bore, 1.326 C.H., 12cc dish, Std. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LQ4 LQ9

Part Number: SUM-326945400512

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Mahle PowerPak Piston and Ring Kits 930229605

Piston and Ring Kit, Forged, Dome, 4.005 in. Bore, Chevy, 6.0L, Kit

Part Number: MLE-930229605

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

Mahle PowerPak Piston Kits 930127805

Pistons, PowerPak, 4.005 in. Bore, 3.480 in. Stroke, 5.700 in. Rod, Forged, No Rings, Chevrolet, 604 Crate Engine, Kit

Part Number: MLE-930127805

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

Diamond Pistons Competition Series Pistons 11540-R1

Comp Series LS2 FT 4.005B/4.000S/6.125R/

Part Number: DPP-11540-R1

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

Call to Order

Summit Racing™ Pro LS Forged Pistons SUM-326S434005-2

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-326S434005-2

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

ICON Premium Forged Piston and Ring Kits IC503KTD.005

Piston and Ring Kits, Premium, Forged 4032 Aluminum, 4.005 in. Bore, 3.750 in. Stroke, Flat Top, Chevy, Small Block, Set of 8

Part Number: UEM-IC503KTD005

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

Summit Racing™ Pro LS Forged Pistons SUM-110927400520

Pro LS 2618 Forged Piston, 4.005 bore, 1.110 C.H., 20cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Cathedral/Rect., 6.0 LY6 LQ4 LQ9, Set of 8

Part Number: SUM-110927400520

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Pro LS Forged Pistons SUM-1109274005-8

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Summit Racing™ Pro LS Forged Pistons SUM-299S27400512

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-299S27400512

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Wiseco Professional Series Piston Kits K456X05

Pistons, Gas Nitrided Rings, Forged Dish, 4.005 in. Bore, Chevy, Kit

Part Number: WIS-K456X05

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

Wiseco Professional Series Piston Kits K394X05

Pistons and Rings, Forged, Dome, 4.005 in. Bore, Chevy, Kit

Part Number: WIS-K394X05

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Wiseco Professional Series Piston Kits K464X05

Pistons, Gas Nitrided Rings, 4.005 in. Bore, Chevy, Kit

Part Number: WIS-K464X05

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

Diamond Pistons Competition Series Pistons 11550-R1-8-H

LS2 4.005B/1.115CD/Kit

Part Number: DPP-11550-R1-8-H

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Diamond Pistons Competition Series Pistons 11541-R1-8-H

LS3/L92 4.005B/1.304CD/Kit

Part Number: DPP-11541-R1-8-H

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Estimated Ship Date: Dec 1, 2025 if ordered today

CP Pistons Bullet Series Pistons BLS1012-005-8

Pistons set of 8

Part Number: CNN-BLS1012005-8

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

Mahle PowerPak Piston and Ring Kits 197719205

Piston and Ring Kit, PowerPak, Forged, Chevy, LS, 6.0L, 6.2L, Kit

Part Number: MLE-197719205

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

Mahle PowerPak Piston and Ring Kits 930219305

Piston and Ring Kit, Forged, 4.005 in. Bore, Chevy, 6.0L, Kit

Part Number: MLE-930219305

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

Mahle LSX Combo PowerPak Piston and Ring Kits 930227005

Pistons, LSX Combo PowerPak Piston and Ring Kits, 4.005 in. Bore, Forged Aluminum, Flat Top, Rings, Chevrolet, 6.0L, Set of 8

Part Number: MLE-930227005

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