Engine Kits & Rotating Assemblies

Repair Kit, Top End, 84.44mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002-6K

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Estimated Ship Date: Oct 28, 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: Oct 28, 2025 if ordered today

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

Part Number: NTI-NX-40025-CK

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Estimated Ship Date: Oct 28, 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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Estimated Ship Date: Oct 28, 2025 if ordered today

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TOP END GASKET KIT, TOP END REPAIR KIT

Part Number: NTI-NX-70029-BK3

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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-70051K2

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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-10012-6K

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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-10014-2K

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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-10014-6K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-10027-4K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 86.98mm Bore, 9.80 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10042-2K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 76.45mm Bore, 8.20 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20000-2K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 76.95mm Bore, 8.20 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20000-4K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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

Part Number: NTI-NA-20005-4K1

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Repair Kit, Top End, 67.47mm Bore, 8.30 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20036-2K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-20036-4K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-20065-2K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-20070K

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, for use on Honda®, Kit

Part Number: HRI-CBK0045

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Estimated Ship Date: Oct 20, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-50024K

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Repair Kit, Top End, 82.96mm Bore, 9.00 to 1 Compression Ratio, Arctic Cat, Suzuki, Kit

Part Number: NTI-NA-30010-4K

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Estimated Ship Date: Oct 30, 2025 if ordered today

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

Part Number: NTI-FX-40037K

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Estimated Ship Date: Tomorrow if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22813CD

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22854B-1

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Estimated Ship Date: Oct 20, 2025 if ordered today

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Top End Kit, Cast Aluminum, 54.000mm Bore, Suzuki, Kit

Part Number: VPX-VTK22998B

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