Engine Kits & Rotating Assemblies

TOP END REPAIR KIT

Part Number: NTI-NA-30050-BK

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Estimated Ship Date: Dec 1, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-20017K

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Estimated Ship Date: Dec 1, 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: Dec 1, 2025 if ordered today

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VERTEX PISTON KT HC FORGED

Part Number: VPX-24028A

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Estimated Ship Date: Dec 1, 2025 if ordered today

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VERTEX PISTON KIT

Part Number: VPX-24259050

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Estimated Ship Date: Dec 1, 2025 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22581B

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Estimated Ship Date: Dec 1, 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: Nov 25, 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: Dec 1, 2025 if ordered today

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Repair Kit, Top End, 100.470mm Bore, 9.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40010-2K

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Repair Kit, Top End, 99.970mm Bore, 9.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40010K

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Repair Kit, Top End, 84.970mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10003K

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Repair Kit, Top End, 91.96mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10008K1

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

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22685C

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Estimated Ship Date: Nov 28, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50019K

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Estimated Ship Date: Dec 1, 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: Nov 21, 2025 if ordered today

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Top End Engine Kits CYL WORKS STD BORE POWER VALVE CYL WORKS STD BORE POWER VALVE YZ250 '99-15

Part Number: CLW-CW-PV-K01

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2025 if ordered today

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TOP END KIT HYPERDRYVE 103.97/+1.00 YAM

Part Number: NTI-NA-40025-4K

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Estimated Ship Date: Dec 1, 2025 if ordered today

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TOP END KIT HYPERDRYVE 102.97/STD YAM

Part Number: NTI-NA-40025K

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Repair Kit, Top End, 83.44mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002-2K

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Estimated Ship Date: Dec 1, 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: Dec 1, 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: Dec 1, 2025 if ordered today

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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: Dec 1, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-40007K

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Estimated Ship Date: Dec 1, 2025 if ordered today

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TOP END KIT HYPERDRYVE 94.96/+0.01 11.4:1 YAM

Part Number: NTI-NA-40009-BHK

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Estimated Ship Date: Dec 1, 2025 if ordered today

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