JR Race Car Engines & Components

ZR3 HEAD .480 DEEP CHAMBER

Part Number: JRC-ZRC-2010

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Estimated Ship Date: Dec 23, 2025 if ordered today

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ZR4 HEAD JR .530 DEEP CHAMBER

Part Number: JRC-ZRC-2510

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ZR4 HEAD JR .580 DEEP CHAMBER

Part Number: JRC-ZRC-2515

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ZR 4 1.550 TI EX VALVE 1/4 STEM

Part Number: JRC-ZRC-4202

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Estimated Ship Date: Dec 23, 2025 if ordered today

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ZR 4 1.875 TI INT VALVE 1/4 STEM

Part Number: JRC-ZRC-4210

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ZR 4 CAMSHAFT 128

Part Number: JRC-ZRC-4ZR128

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ZR 4 CAMSHAFT 129

Part Number: JRC-ZRC-4ZR129

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ZR 4 CAMSHAFT 131

Part Number: JRC-ZRC-4ZR131

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2.662 .100 OVER .690 CH

Part Number: JRC-954-1009

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Piston and Rings, Cast Aluminum, Flat Top, 2.776 in. Bore, Kit

Part Number: JRC-954-2089

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Estimated Ship Date: Dec 23, 2025 if ordered today

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Piston, Flat Top, 3.012 in. Bore, Cast Aluminum, Rings, Wrist Pin, Clips, Kit

Part Number: JRC-954-30129

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1.750 INT VALVE 3 1/4 7MM BEAD LOCK

Part Number: JRC-TNP-3951

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1.550 EX VALVE 3 1/2 7MM BEAD LOCK

Part Number: JRC-TNP-3953

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Piston, Flat Top, 3.150 in. Bore, Cast Aluminum, Rings, Wrist Pin, Clips, Kit

Part Number: JRC-954-31509

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Piston, Flat Top, 3.540 in. Bore, Cast Aluminum, Rings, Wrist Pin, Clips, Kit

Part Number: JRC-954-35409

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Piston, Flat Top, 3.542 in. Bore, Cast Aluminum, Rings, Wrist Pin, Clips, Kit

Part Number: JRC-954-35429

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4764 CAMSHAFT - 3 1/4 & 3 1/2 TITAN

Part Number: JRC-TNP-3501

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5968 CAMSHAFT - 3 1/2 UP & 3 3/4 TITAN

Part Number: JRC-TNP-3502

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TITAN ROLLER LIFTERS

Part Number: JRC-TNP-3900

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2.562 STANDARD BORE PISTON KIT

Part Number: JRC-954-0006

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2.567 .005 OVER PISTON KIT

Part Number: JRC-954-0056

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2.622 .060 OVER PISTON KIT

Part Number: JRC-954-0609

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