2012 Engine Kits & Rotating Assemblies

Repair Kit, Top End, 83.950mm Bore, 9.50 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40005-4K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 84.950mm Bore, 10.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40011-2K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 101.970mm Bore, 9.40 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40012K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 84.450mm Bore, 10.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40011K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 92.47mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-2K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 92.97mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-4K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50011K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-10012-4K

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Estimated Ship Date: Feb 23, 2026 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: Feb 23, 2026 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: Feb 23, 2026 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: Feb 23, 2026 if ordered today

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

Part Number: NTI-NA-10014K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-10027-4K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 89.98mm Bore, 9.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10043-2K

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Estimated Ship Date: Feb 23, 2026 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: Feb 23, 2026 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22926B-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK23430CD

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Estimated Ship Date: Feb 23, 2026 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK23630A-1

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Estimated Ship Date: Feb 23, 2026 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22584B-2

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Estimated Ship Date: Feb 23, 2026 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22803B

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 68.45mm Bore, 9.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10027K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 83.000mm Bore, 8.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40006K

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Repair Kit, Top End, 89.97mm Bore, 11.30 to 1 Compression Ratio, Arctic Cat, Kawasaki, Suzuki, Kit

Part Number: NTI-NA-30002-BK

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Estimated Ship Date: Feb 24, 2026 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30015-CK

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Estimated Ship Date: Feb 24, 2026 if ordered today

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Repair Kit, Top End, 91.97mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004K

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Estimated Ship Date: Feb 24, 2026 if ordered today

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