SUBARU WRX STI Pistons & Piston Rings

Piston Rings, Premium Ductile Ring Sets, Chrome, 3.917 in. Bore, 1.2mm, 1.2mm, 2.0mm Thickness, L4, Set of 4

Part Number: HSN-2C5219

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Piston Rings, Premium Ductile Ring Sets, 0.020 in. Oversize, 3.937 in. Bore, Chrome, 1.2mm, 1.2mm, 2.0mm Ring Thickness, H4, L4, Set of 4

Part Number: HSN-2C5219020

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Engine Piston Ring Set, Engine Piston Ring Set

Part Number: MAH-42308CP

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Engine Piston Ring Set, 4-Cyl Ring Set; Chrome

Part Number: HSN-2C5219030

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Engine Piston Ring Set, Engine Piston Ring Set

Part Number: MAH-42308CP-020

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Piston and Ring Kit, PowerPak, Thermal Barrier Coated, Forged, Subaru, 2.5L, Kit

Part Number: MLE-930285417T

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Estimated Ship Date: Today

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Engine Piston Ring Set, Engine Piston Ring Set

Part Number: MAH-42308CP-010

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Estimated Ship Date: Feb 16, 2026 if ordered today

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• Special Order