Pistons - 4.125 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-1109274125-4

Pistons, Pro LS, 2618 Forged, 4.125 in. Bore, 6.125 in. Rod, 4.00 in. Stroke, -4cc Dome, 1.110 in. Compression Height, Chevrolet, LS, 7.0L, Set of 8

Part Number: SUM-1109274125-4

5.0 out of 5 stars ( 2 )

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Summit Racing™ Forged Pro Pistons SUM-BBC396125

Forged Pro pistons BB Chevy 396, 4.125 bore, 1.765 C.H., 3.76 in. stroke, 6.135 in. rod, 32cc open/closed ch. Dome 10.5@110cc, 10.1@114cc, 9.6@119cc

Part Number: SUM-BBC396125

5.0 out of 5 stars ( 1 )

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Summit Racing™ Forged Pro Pistons SUM-SBC400STDL

Summit Racing™ Forged Pro Pistons SUM-SBC400STDL

Forged Pro pistons for SB Chevy 400 Long Rod, 4.125 bore, 1.125 C.H., 3.75 in. stroke, 6 in. rod, 12cc Dish, 10.5@64cc, 10.2@67cc, 9.8@72cc.

Part Number: SUM-SBC400STDL

5.0 out of 5 stars ( 1 )

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KB Performance Claimer Pistons 9907HC.STD

Pistons, Hypereutectic, Flat, 4.125 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Part Number: UEM-9907HC-STD

5.0 out of 5 stars ( 1 )

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KB Performance Pistons KB160.STD

Pistons, Hypereutectic, Dome, 4.125 in. Bore, Chevy, Set of 8

Part Number: UEM-KB160-STD

Not Yet Reviewed

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D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-2303-4125

Piston Set, 400 SBC K2-FX Series -16cc Dish Top Piston Set. 4.125 bore

Part Number: DMS-K2-2303-4125

Not Yet Reviewed

Estimated Ship Date: Sep 19, 2025 if ordered today

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Estimated Ship Date: Sep 19, 2025 if ordered today

JE Pistons Pistons 295445

Pistons, Forged, Flat Top, 2-Valve Relief, 4.125 in. Bore, 3.875 in. Stroke, 6.000 in. Rod, 1.062 in Compression, Chevy, Set of 8

Part Number: JEP-295445

Not Yet Reviewed

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KB Performance Claimer Pistons 9911HC.STD

Pistons, Hypereutectic, Flat, 4.125 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8

Part Number: UEM-9911HC-STD

4.0 out of 5 stars ( 1 )

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ICON Premium Forged Piston and Ring Kits IC756KTD.STD

Piston and Ring Kit, Forged, Dome, 4.125 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-IC756KTD-STD

Not Yet Reviewed

Estimated Ship Date: Oct 2, 2025 if ordered today

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Estimated Ship Date: Oct 2, 2025 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3300-4125C

-4cc Flat Top SBF 20 Degree Inline Forged 4032

Part Number: DMS-K133004125C

Not Yet Reviewed

Estimated Ship Date: Sep 19, 2025 if ordered today

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Estimated Ship Date: Sep 19, 2025 if ordered today

Mahle LSX Combo PowerPak Piston and Ring Kits 930226525

Piston and Ring Kit, LSX Combo PowerPak, 4.125 in. Bore, Forged Aluminum, Kit

Part Number: MLE-930226525

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

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Estimated Ship Date: Sep 17, 2025 if ordered today

Speed-Pro Hypereutectic Pistons H615CP

Pistons, Hypereutectic, Dish, 4.125 in. Bore, Chevy, Set of 8

Part Number: SLP-H615CP

Not Yet Reviewed

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Mahle LSX Combo PowerPak Piston and Ring Kits 930226725

Pistons, LSX Combo PowerPak Piston and Ring Kits, 4.125 in. Bore, Forged Aluminum, Flat Top, Rings, Chevrolet, 7.0L, Set of 8

Part Number: MLE-930226725

5.0 out of 5 stars ( 1 )

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RaceTec AutoTec Forged Pistons 1000197

Pistons, AutoTec SBC, 4.125, 4, Flat Top 6, 0.927, SBC 23°4.125, Sold as a set of 8.

Part Number: PIS-1000197

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Pistons 1-3316-4125C

+6cc Dome Top SBF 20 Degree Inline Forged 4032

Part Number: DMS-1-3316-4125C

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

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Estimated Ship Date: Sep 22, 2025 if ordered today

Wiseco Pro Tru Street Pistons PTS539A45

Pistons, Pro Tru, Forged, Flat Top, 4.125 in. Bore, AMC, 360, Set of 8

Part Number: WIS-PTS539A45

4.5 out of 5 stars ( 2 )

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Mahle PowerPak Piston and Ring Kits 930244825

Piston and Ring Kit, Forged, 4.125 in. Bore, Ford, Kit

Part Number: MLE-930244825

Not Yet Reviewed

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Mahle PowerPak Plus Piston and Ring Kits 930245225

Pistons, PowerPak Plus, Forged 2618 Aluminum, 4.125 in. Bore, Flat Top, Rings Included, Ford, Small Block, Set of 8

Part Number: MLE-930245225

Not Yet Reviewed

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Wiseco RED Series Pistons RED0004XS

Pistons, Red Series, Forged Aluminum, 4.125 Bore, -6.60cc Flat, 3.875 in. Stroke, 5.850 Rod, Chevy, Small Block, Set of 8

Part Number: WIS-RED0004XS

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

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Estimated Ship Date: Sep 22, 2025 if ordered today

Mahle PowerPak Piston and Ring Kits 930221525

Piston and Ring Kit, Forged, 4.125 in. Bore, Chevy, Kit

Part Number: MLE-930221525

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

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Estimated Ship Date: Sep 18, 2025 if ordered today

KB Performance Pistons KB361.030

Pistons, Hypereutectic, Dome, 4.125 in. Bore, Chevy, Set of 8

Part Number: UEM-KB361-030

Not Yet Reviewed

Estimated Ship Date: Oct 1, 2025 if ordered today

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Estimated Ship Date: Oct 1, 2025 if ordered today

Wiseco Professional Series Piston Kits K452X125

Pistons, Gas Nitrided Rings, Forged Dish, 4.125 in. Bore, Chevy, Kit

Part Number: WIS-K452X125

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

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Estimated Ship Date: Sep 22, 2025 if ordered today

JE Pistons Extreme Duty 23 Degree Inverted Dome Top Pistons 242885

Pistons, Extreme Duty 23 degree Inverted Dome, Forged, Dish D-Shape Cup, 4.125 in. Bore, 3.750 in. Stroke, 6.000 in. Rod Chevy, Set of 8

Part Number: JEP-242885-8

Not Yet Reviewed

Estimated Ship Date: Sep 16, 2025 if ordered today

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Estimated Ship Date: Sep 16, 2025 if ordered today

JE Pistons Big Block Closed Chamber Pistons 258206

Pistons, Forged, Dome, Single Valve Relief, 4.125 in. Bore, 3.760 in. Stroke, 6.135 in. Rod, 1.765 in. Compression, Chevy, Set of 8

Part Number: JEP-258206-8

Not Yet Reviewed

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Mahle PowerPak Piston and Ring Kits 930249025

Piston and Ring Kit, Forged, 4.125 in. Bore, Ford, Kit

Part Number: MLE-930249025

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

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Estimated Ship Date: Sep 18, 2025 if ordered today