2003 Engine Kits & Rotating Assemblies

Rebuild Kit, Complete Bottom End, Yamaha, YFM660F, YXR66F, Kit

Part Number: HRI-CBK0152

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Estimated Ship Date: Apr 15, 2026 if ordered today

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VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR00011

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Estimated Ship Date: Apr 27, 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: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-10001-3K

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Repair Kit, Top End, 85.470mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10003-2K

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Estimated Ship Date: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-70004-CK

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50026-2K

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Estimated Ship Date: Apr 27, 2026 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-10000K2

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Estimated Ship Date: Apr 27, 2026 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: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-40085-BK

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Estimated Ship Date: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-70000K

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Estimated Ship Date: Apr 27, 2026 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: Apr 27, 2026 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: Apr 27, 2026 if ordered today

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Repair Kit, Top End, 47.44mm Bore, 8.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40085K

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Estimated Ship Date: Apr 27, 2026 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: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-30050K1

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Repair Kit, Top End, 52.510mm Bore, 9.60 to 1 Compression Ratio, Kawasaki, Suzuki, Kit

Part Number: NTI-NX-20010-BK

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Estimated Ship Date: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-70001-BK

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Estimated Ship Date: Apr 27, 2026 if ordered today

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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: Apr 27, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-20010-CK

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Repair Kit, Top End, 47.500mm Bore, 6.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40008-2K

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Repair Kit, Top End, 91.460mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10000-6K

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Repair Kit, Top End, 47.940mm Bore, 9.50 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30085K

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Cylinder Kit, Aluminum, 90.00mm Bore, Arctic Cat, Kawasaki, Suzuki, Set

Part Number: CLW-40001

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Estimated Ship Date: Apr 27, 2026 if ordered today

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QB FULL TOP END SET

Part Number: QDB-56-3914

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Estimated Ship Date: Apr 21, 2026 if ordered today

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