Engine Kits & Rotating Assemblies

Repair Kit, Top End, 83.94mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002-4K

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Estimated Ship Date: Nov 13, 2025 if ordered today

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Repair Kit, Top End, 75.47mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-4K

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Estimated Ship Date: Nov 13, 2025 if ordered today

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Repair Kit, Top End, 75.97mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-6K

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Estimated Ship Date: Nov 13, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50015-2K

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Estimated Ship Date: Nov 13, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-50024K

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TOP END REPAIR KIT

Part Number: NTI-NA-50025-4K

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Repair Kit, Top End, 53.940mm Bore, 8.80 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10000K1

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Estimated Ship Date: Nov 13, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-10003K1

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TOP END REPAIR KIT

Part Number: NTI-NX-10025-2K

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TOP END REPAIR KIT

Part Number: NTI-NX-40009-CK

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Repair Kit, Top End, 66.360mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025-BKA

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Estimated Ship Date: Nov 13, 2025 if ordered today

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Repair Kit, Top End, 66.370mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025-CKA

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Repair Kit, Top End, 66.350mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025KA

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TOP END REPAIR KIT

Part Number: NTI-NX-40026-BK

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Repair Kit, Top End, 67.94mm Bore, 10.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40026KA

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Estimated Ship Date: Nov 13, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-40085-BK

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TOP END REPAIR KIT

Part Number: NTI-NX-70000K

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Repair Kit, Top End, 39.460mm Bore, 8.50 to 1 Compression Ratio, KTM, Kit

Part Number: NTI-NX-70001K

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TOP END REPAIR KIT

Part Number: NTI-NX-70004-BK

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TOP END REPAIR KIT

Part Number: NTI-NX-70005-BK

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TOP END REPAIR KIT

Part Number: NTI-NX-70005K

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TOP END REPAIR KIT

Part Number: NTI-NX-70007K

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TOP END REPAIR KIT

Part Number: NTI-NX-70020-BK

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TOP END REPAIR KIT

Part Number: NTI-NX-70020K

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