Summit Racing Performance, Restoration & Replacement Parts & Tools

Piston Rings, Pro GPX Gas Ported, 3.927 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP392712

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Piston Rings, Pro GPX Gas Ported, 4.165 in. Bore, File Fit, Plasma-moly, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP416564

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Estimated Ship Date: Jun 19, 2026 if ordered today

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Piston Rings, Pro GPX Gas Ported, 4.090 in. Bore, File Fit, Gas Nitrided, 1.0mm, 1.0mm, 2.0mm Thickness, V8, Set

Part Number: SUM-GP409010

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Piston Rings, Pro GPX Gas Ported, 3.790 in. Bore, File Fit, Gas Nitrided, 1.0mm, 1.0mm, 2.0mm Thickness, V8, Set

Part Number: SUM-GP379010

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Piston Rings, Pro GPX Gas Ported, 73mm/2.874 in. Bore, Forged Sport Compact, File Fit, Gas Nitrided, 1.0mm, 1.2mm, 2.8mm Thickness, Single Piston Set

Part Number: SUM-GP7300XX

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Piston Rings, Pro GPX Gas Ported, 4.160 in. Bore, File Fit, Gas Nitrided, 0.043 in., 0.043 in., 3.0mm Thickness, V8, Set

Part Number: SUM-GP416043

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Piston Rings, Pro GPX Gas Ported, 4.130 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP413016

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Piston Rings, Pro GPX Gas Ported, 4.065 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP406516

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Piston Rings, Pro GPX Gas Ported, 4.350 in. Bore, File Fit, Gas Nitrided, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP435015

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Pro GPX 82mm/3.228 Gas Ported Rings, Forged Honda B series pistons, Gas Nitrided Steel top 1.0mm, 1.2mm, 2.8mm Thickness, Single Piston Sett

Part Number: SUM-GP8200XX

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Piston Rings, Pro GPX Gas Ported, 3.662 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP366212

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Piston Rings, Pro GPX Gas Ported, 4.280 in. Bore, File Fit, Gas Nitrided, 0.043 in., 0.043 in., 3.0mm Thickness, V8, Set

Part Number: SUM-GP428043

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Piston Rings, Pro GPX Gas Ported, 3.917 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP391712

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Piston Rings, Pro GPX Gas Ported, 3.907 in. Bore, File Fit, Gas Nitrided, 1.0mm, 1.0mm, 2.0mm Thickness, V8, Set

Part Number: SUM-GP390810

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Piston Rings, Pro GPX Gas Ported, 4.290 in. Bore, File Fit, Plasma-moly, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP429064

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Piston Rings, Pro GPX Gas Ported, 4.350 in. Bore, File Fit, Plasma-moly, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP435064

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Piston Rings, Pro GPX Gas Ported, 3.780 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP378016

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Pro GPX 81.25mm/3.199 Gas Ported Rings, Forged Honda B series pistons, File Fit, Gas Nitrided, 1.0mm, 1.2mm, 2.8mm Thickness, Single Piston Set

Part Number: SUM-GP8125XX

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Pro GPX 92.5mm/3.642 Gas Ported Rings, Subaru forged pistons, File Fit, Gas Nitrided, 1.0mm, 1.2mm, 2.8mm Thickness, Single Piston Set,

Part Number: SUM-GP9250XX

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Piston Rings, Pro GPX Gas Ported, 3.582 in. Bore, File Fit, Gas Nitrided, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP358215

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Piston Rings, Pro GPX Gas Ported, 4.055 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP405512

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Pro GPX 89.5mm/3.524 Gas Ported Rings, Forged Sport Compact pistons, File Fit, Gas Nitrided, 1.0mm, 1.2mm, 2.8mm Thickness, Single Piston Set,

Part Number: SUM-GP8950XX

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Gen. 3/4 Chevy LS Rocker Arm Trunnion Upgrade Kit, Bronze Bushing, Retrofit, Rectangle and Cathedral Port Rockers, Set of 16

Part Number: SUM-141560

4.34 out of 5 stars ( 71 )

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Rocker Arms, Trunnion Upgrade, Assembled, Cast Steel, 1.7 Ratio, Straight Body, Cathedral Port, Chevy, LS1, LS2, LS6, LQ4, LQ9, Set of 16

Part Number: SUM-141556

4.06 out of 5 stars ( 17 )

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Rocker Arms, Roller Bearing Trunnion, L92/LS9/LS3, Assembled, Heavy Duty Cast Steel, 1.7 Ratio, Rectangle Port, Chevy, Set of 16

Part Number: SUM-141554

5.0 out of 5 stars ( 7 )

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