Summit Racing Pistons & Piston Rings

Piston Rings, Pro GPX Gas Ported, 4.155 in. Bore, File Fit, Gas Nitrided, 0.043 in., 0.043 in., 3.0mm Thickness, V8, Set

Part Number: SUM-GP415543

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Estimated Ship Date: Monday 10/6/2025

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Piston Rings, Cast Iron, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SUM-133-139-40

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Monday 10/6/2025

Piston Rings, Ductile Plasma Iron Top, Ductile second, Std. Tension oil, File Fit for 4.310 in. bore 1.5mm, 1.5mm, 3.0mm, Set

Part Number: SUM-1362M851065

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Piston Rings, Pro GPX Gas Ported, 4.125 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP412516

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Piston Rings, Pro GPX Gas Ported, 4.030 in. Bore, File Fit, Gas Nitrided, 1.0mm, 1.0mm, 2.0mm Thickness, V8, Set

Part Number: SUM-GP403010

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Pro LS 2618 Forged Piston, 4.070 bore, 1.326 C.H., 2cc Dome, Std. Stroke, Full Float Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.2L LS3 L92 LS9, Set of 8

Part Number: SUM-3269434070-2

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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

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Piston Rings, Pro GPX Gas Ported, 3.780 in. Bore, File Fit, Gas Nitrided, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP378015

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

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

Part Number: SUM-17370FC-40

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Piston Rings, Pro GPX Gas Ported, 4.125 in. Bore, File Fit, Gas Nitrided, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP412515

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Pistons, Forged Aluminum, Flat, 4.020 in. Bore, 1.115 in. Compression Height, 0.927 in. Pin, Chevy, LS, Set of 8

Part Number: SUM-17406C-20

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

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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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Forged Pro pistons for 302 Windsor, 4.030 bore, 1.605 C.H., 3 in. stroke, 5.090 in. rod, 3cc dome 10.7@58cc, 10.4@60cc, 9.9@64cc, 9.7:1@ 66cc.

Part Number: SUM-SBF302030D

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Piston Rings, Plasma-Moly, 4.060 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SUM-134-CM553260

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

Piston Rings, Moly, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SUM-133-M139-60

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

Piston Rings, Moly, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SUM-133-M139-30

4.63 out of 5 stars ( 19 )

Estimated Ship Date: Monday 10/6/2025

Piston Rings, Pro GPX Gas Ported, 4.040 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP404016

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Piston Rings, Pro GPX Gas Ported, 4.125 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP412512

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Pro LS 2618 Forged Piston, 4.070 bore, 1.326 C.H., 12cc Dish, Std. Stroke, Full Float Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.2 LS3 L92 LS9, Set of 8

Part Number: SUM-326943407012

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Piston Rings, Ductile Plasma Iron Top, Ductile second, Std. Tension oil, File Fit for 4.155 in. bore 1.5mm, 1.5mm, 3.0mm, Set

Part Number: SUM-1362M8505035

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

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Forged Pro pistons for SB Chevy 400 Long Rod, 4.155 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-SBC400030L

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Pistons, Hypereutectic, Flat, 4.020 in. Bore, Chevy, Set of 8

Part Number: SUM-17351C-20

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

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Piston Rings, Pro GPX Gas Ported, 4.075 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP407512

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Piston Rings, Pro GPX Gas Ported, 4.030 in. Bore, File Fit, Plasma-moly, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP403064

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Piston Rings, Pro GPX Gas Ported, 4.165 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP416516

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