Engine Kits & Rotating Assemblies

Repair Kit, Top End, 86.73mm Bore, 9.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10042-1K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-11000-2K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Repair Kit, Top End, 65.920mm Bore, 6.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40003K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-40015K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-40019-4K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Piston, TOP END REPAIR KIT

Part Number: NTI-NA-40080-2K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Piston, TOP END REPAIR KIT

Part Number: NTI-NA-40080K

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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: Oct 29, 2025 if ordered today

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Repair Kit, Top End, 74.97mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-2K

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Estimated Ship Date: Oct 29, 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-50003K

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Cylinder Head NAMURA TOP END REPAIR KIT NAMURA TOP END REPAIR KIT

Part Number: NTI-NX-20013K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Repair Kit, Top End, 82.94mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002K

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Estimated Ship Date: Oct 27, 2025 if ordered today

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Repair Kit, Top End, 67.420mm Bore, 6.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40003-6K

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Estimated Ship Date: Oct 27, 2025 if ordered today

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QB FULL TOP END SET

Part Number: QDB-56-3949

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Estimated Ship Date: Oct 23, 2025 if ordered today

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QB FULL TOP END SET

Part Number: QDB-56-3960

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Estimated Ship Date: Oct 23, 2025 if ordered today

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QB FULL TOP END SET

Part Number: QDB-56-3963

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Estimated Ship Date: Oct 23, 2025 if ordered today

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QB FULL TOP END SET

Part Number: QDB-56-3978

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Estimated Ship Date: Oct 23, 2025 if ordered today

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QB FULL TOP END SET

Part Number: QDB-56-4293

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Repair Kit, Top End, 78.96mm Bore, 8.80 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10007-2K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 79.21mm Bore, 8.80 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10007-3K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50011-6K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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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: Oct 28, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-10025-2K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 46.960mm Bore, 8.40 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10080-CK1

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 46.940mm Bore, 8.40 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10080K1

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Estimated Ship Date: Oct 28, 2025 if ordered today

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