Pistons & Piston Rings

ProX Piston Kit Yam Wolverine RMAX2/4 '21-22

Part Number: PXR-01-2921-B

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Pistons, Professional Series, Forged Aluminum, Flat Top, 4.020 in. Bore, Stock Stroke, Rings Included, Left Side, Chevy, LS, Each

Part Number: WIS-60045LX2

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Pistons, Professional Series, Forged Aluminum, Flat Top, 4.020 in. Bore, Stock Stroke, Rings Included, Right Side, Chevy, LS, Each

Part Number: WIS-60045RX2

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Piston and Ring Kit, Hypereutectic, 3.498 in. Bore, Harley-Davidson®, 10.00;1 Compression Ratio, Kit

Part Number: UEM-KB272-STD

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 19, 2025 if ordered today

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Piston and Ring Kit, Forged Aluminum, 47.000mm Bore, Honda®, Kit

Part Number: WIS-PK1269

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Piston Rings, Performance Series, 4.250 in. Bore, Plus 0.005 in., File Fit, 1.0mm, 1.0mm, 2.0mm, 8-Cylinder, Set

Part Number: MLE-4255MS-112

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Estimated Ship Date: Oct 30, 2025 if ordered today

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PISTONS

Part Number: UEM-KB661LCA-STD

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Estimated Ship Date: Nov 19, 2025 if ordered today

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Pistons, Cast, Flat, 3.970 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Set of 8

Part Number: UEM-1266C-060

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Estimated Ship Date: Nov 19, 2025 if ordered today

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Piston Rings, Pro HEMI, 4.095 in. bore, File-fit 1.2mm Nitride Steel Top, 1.2mm Ductile Second, 3.0mm Std. Tension Oil, 8 Cylinders, Set

Part Number: SUM-409512

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Piston Rings, Stainless Steel Series Performance, Gas Nitrided, 4.155 in. Bore, 1.2mm, 1.2mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-SN9050030

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Pistons, Cast, Flat, 4.100 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring, Mopar, Small Block, Set of 8

Part Number: UEM-1267-060

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Estimated Ship Date: Nov 21, 2025 if ordered today

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Piston, Forged, Dome, Single Valve Relief, 4.310 in. Bore, 4.000 in. Stroke, 6.135 in. Rod, 1.645 in. Compression, Chevy, Each

Part Number: JEP-212136S

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Estimated Ship Date: Oct 31, 2025 if ordered today

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Piston, Forged, Flat Top, 2-Valve Reliefs, 4.030 in. Bore, 3.750 in. Stroke, 5.700 in. Rod, 1.425 in. Compression, Chevy, Each

Part Number: JEP-138089S

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Piston Rings, Plasma-Moly, 4.355 in. Bore, 1/16 in., 1/16 in., 3/16 in.Thickness, 8-Cylinder, Set

Part Number: SLP-R927835

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Piston Rings, Plasma-moly, 3.866 in. Bore, 2.5mm, 2.0mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: MAH-42097

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Estimated Ship Date: Nov 14, 2025 if ordered today

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Piston Rings, Gas Nitride Steel Top, Ductile second, Std. Tension oil, File Fit for 4.087 in. bore 1.2mm, 1.2mm, 3.0mm, Set

Part Number: SUM-136SN9045087

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Piston Rings, Pro GPX Gas Ported, 3.937 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP393712

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Piston Rings, Pro GPX Gas Ported, 3.903 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP390312

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Piston Rings, Pro GPX Gas Ported, 4.290 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP429016

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Piston and Ring Kit, Hypereutectic, 3.645 in. Bore, Harley-Davidson®, 10.50;1 Compression Ratio, Kit

Part Number: UEM-KB294-020

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 19, 2025 if ordered today

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Piston Rings, Performance Series, 4.000 in. Bore, File Fit, 1.5mm, 1.5mm, 3.0mm, 8-Cylinder, Set

Part Number: MLE-4005MS-15

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Piston Rings, Pro GPX Gas Ported, 4.200 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP420016

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Piston Rings, Pro GPX Gas Ported, 4.500 in. Bore, File Fit, Gas Nitrided, 0.043 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP450046

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Piston Rings, Pro GPX Gas Ported, 4.035 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP403516

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Piston Rings, Pro GPX Gas Ported, 4.010 in. Bore, File Fit, Gas Nitrided, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP401015

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