Engine Kits & Rotating Assemblies

Repair Kit, Top End, 81.45mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50001-6K

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Estimated Ship Date: Oct 31, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-40010-6K

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Estimated Ship Date: Oct 31, 2025 if ordered today

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PISTON, 2011-2024

Part Number: MOP-05184347AH

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Estimated Ship Date: Oct 30, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-40004-4K

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Estimated Ship Date: Oct 27, 2025 if ordered today

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TOP END GASKET KIT, TOP END REPAIR KIT (FORGED PISTON)

Part Number: NTI-FX-40032-BK

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Estimated Ship Date: Oct 31, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-10012K

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Estimated Ship Date: Oct 31, 2025 if ordered today

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Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50081-BK

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Estimated Ship Date: Oct 31, 2025 if ordered today

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Engine Re-Ring, Cast, 3.75 in. Bore, .020 in. Rod, AMC, V8, Kit

Part Number: FEM-205117-02

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Estimated Ship Date: Oct 21, 2025 if ordered today

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RE-RING KIT

Part Number: FEM-205-1273M311

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Estimated Ship Date: Oct 13, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-50024-6K

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Engine Re-Ring, Moly, 4.030 in. Bore, .030 in. Rod, Chevy, 350, Kit

Part Number: FEM-205630-33

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Engine Re-Ring, Cast, 3.910 in. Bore, .020 Rod, Dodge, 318, Kit

Part Number: FEM-205217-02

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Engine Re-Ring, Moly, 4.030 in. Bore, .020 in. Rod, .010 in. Main, Dodge, 360, Kit

Part Number: FEM-205683AM-321

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Estimated Ship Date: Oct 13, 2025 if ordered today

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RERING KIT

Part Number: FEM-205-6287M322

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Engine Re-Ring, Moly, 4.030 in. Bore, .030 in. Rod, .020 in. Main, Chevy, 350, Kit

Part Number: FEM-205630M-332

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Engine Re-Ring, Cast, 4.040 in. Bore, .030 in. Rod, .030 Main, Chevy, Kit

Part Number: FEM-205-130M-433

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Engine Re-Ring, Moly, 4.030 in. Bore, .010 in. Rod, .030 in. Main, Chevy, Small Block, Kit

Part Number: FEM-205-630M-331

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Estimated Ship Date: Oct 13, 2025 if ordered today

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RERING KIT

Part Number: FEM-2051369M-000

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50080K2

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Repair Kit, Top End, 85.450mm Bore, 10.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40011-4K

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Repair Kit, Top End, 88.95mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10004K

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Estimated Ship Date: Nov 4, 2025 if ordered today

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