Engine Kits & Rotating Assemblies Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

Namura Technologies Top-End Repair Kits NA-40005-4K

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

Part Number: NTI-NA-40005-4K

Not Yet Reviewed

Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Powersports Engine Rebuild Kits NA-40009-BHK

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: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-40011-4K

Repair Kit, Top End, 85.450mm Bore, 10.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40011-4K

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Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Powersports Top End Engine Kits NA-50091-CK

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50091-CK

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Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits for 1999-2001 YZ250 - NX-40025-CK

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

Part Number: NTI-NX-40025-CK

Not Yet Reviewed

Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Powersports Top End Engine Kits NX-40026-CKA

TOP END REPAIR KIT

Part Number: NTI-NX-40026-CKA

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Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-20065-2K

TOP END REPAIR KIT

Part Number: NTI-NA-20065-2K

Not Yet Reviewed

Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-20077K

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-20077K

Not Yet Reviewed

Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Powersports Top End Engine Kits NX-70051K2

TOP END REPAIR KIT

Part Number: NTI-NX-70051K2

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Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits for 1998-2004 TRX450FE FOURTRAX FOREMAN ES, TRX450FM FOURTRAX FOREMAN S - NA-10000-1K

Repair Kit, Top End, 90.210mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10000-1K

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Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits for 1998-2004 TRX450FE FOURTRAX FOREMAN ES, TRX450FM FOURTRAX FOREMAN S - NA-10000-3K

Repair Kit, Top End, 90.710mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10000-3K

Not Yet Reviewed

Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-10007-2K

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: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-10007-3K

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

Part Number: NTI-NA-10007-3K

Not Yet Reviewed

Estimated Ship Date: Jul 30, 2025 if ordered today

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Estimated Ship Date: Jul 30, 2025 if ordered today

BBR Motorsports Powersports Top End Engine Kits 411-HXR-7001

BORE KIT - 88CC

Part Number: BRM-411-HXR-7001

Not Yet Reviewed

Estimated Ship Date: Aug 1, 2025 if ordered today

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Estimated Ship Date: Aug 1, 2025 if ordered today

Namura Technologies Top-End Repair Kits for 2004-2013 YFZ450, 2006-2007 YFZ450 BILL BALANCE EDITION, 2007-2008 YFZ450 SE - NA-40009-BK

Repair Kit, Top End, 94.960mm Bore, 11.40 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40009-BK

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-10042-1K

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

Part Number: NTI-NA-10042-1K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-20065-4K

TOP END REPAIR KIT

Part Number: NTI-NA-20065-4K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Technologies Top-End Repair Kits for 1999-2008 TRX400EX SPORTRAX, 2009-2014 TRX400X, 1996-2004 XR400R - NA-10003K

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

Part Number: NTI-NA-10003K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Powersports Top End Engine Kits NA-10008-4K

TOP END REPAIR KIT

Part Number: NTI-NA-10008-4K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Technologies Top-End Repair Kits NA-50004-4K

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

Part Number: NTI-NA-50004-4K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Vertex Top-End Piston Kits for 2002-2022 YZ250, 2022 YZ250 MONSTER ENERGY YAMAHA RACING EDITION, 2016-2022 YZ250X - VTK22584B-2

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22584B-2

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Vertex Top-End Piston Kits for 2000-2025 KX65, 2003-2005 RM65 - VTK22860B

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22860B

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Powersports Engine Rebuild Kits NA-50093K

TOP END KIT TWIN CYLINDER 90.42/STD POL

Part Number: NTI-NA-50093K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Powersports Top End Engine Kits NA-50081K

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50081K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today

Namura Technologies Top-End Repair Kits for 1997-2001 CR250R - NX-10025K

Repair Kit, Top End, 66.340mm Bore, 8.70 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10025K

Not Yet Reviewed

Estimated Ship Date: Jul 31, 2025 if ordered today

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Estimated Ship Date: Jul 31, 2025 if ordered today