1999 Engine Kits & Rotating Assemblies Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

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

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 2004-2025 CRF50F, 2000-2003 XR50R, 1979-1999 Z50R - NX-10051-2K

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-10051-2K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 2004-2012 CRF70F, 1997-2003 XR70R - NX-10070-8K

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-10070-8K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1992-2002 CR80R, 1996-2002 CR80RB EXPERT - NX-10080K1

Repair Kit, Top End, 46.940mm Bore, 8.40 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10080K1

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1993-2003 KX250 - NX-20025K

Repair Kit, Top End, 66.350mm Bore, 8.60 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20025K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1989-2000 RM125 - NX-30000K

Repair Kit, Top End, 53.96mm Bore, Suzuki, Kit

Part Number: NTI-NX-30000K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50000-6K

Repair Kit, Top End, 73.46mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50000-6K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50002-2K

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: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50002-6K

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: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50004K

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: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1995-2003 TRX400FW FOREMAN 4X4 - NA-10001-1K

TOP END REPAIR KIT

Part Number: NTI-NA-10001-1K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1999-2008 TRX400EX SPORTRAX, 2009-2014 TRX400X, 1996-2004 XR400R - NA-10003-2K

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: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1993-2008 TRX300EX SPORTRAX, 2009 TRX300X - NA-10005K

Repair Kit, Top End, 73.95mm Bore, 8.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10005K

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-20000K

Repair Kit, Top End, 75.95mm Bore, 8.20 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20000K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1988-2006 YFS200 BLASTER - NA-40002K

Repair Kit, Top End, 65.94mm Bore, High Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40002K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50003-2K

Repair Kit, Top End, 74.97mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-2K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1995-2013 KX100, 2003 RM100 - NX-20010K

Repair Kit, Top End, 52.500mm Bore, 9.60 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20010K

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Wiseco Powersports Garage Buddy Engine Rebuild Kits for 1987-2006 YFZ350 BANSHEE - PWR100-640

Engine Rebuild Kits, Powersports Garage Buddy, Wiseco Pro-Lite Piston Series, Stock Size, Cylinder, Crankshaft, Gaskets, Bearings, Yamaha, Kit

Part Number: WIS-PWR100-640

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Wiseco Powersports Garage Buddy Engine Rebuild Kits for 1987-2006 YFZ350 BANSHEE - PWR100-650

Engine Rebuild Kits, Powersports Garage Buddy, Wiseco Pro-Lite Piston Series, 1.00mm Oversize, Cylinder, Crankshaft, Gaskets, Bearings, Yamaha, Kit

Part Number: WIS-PWR100-650

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Wiseco Powersports Garage Buddy Engine Rebuild Kits for 1987-2006 YFZ350 BANSHEE - PWR100-655

Garage Buddy Engine Rebuild, Bashee

Part Number: WIS-PWR100-655

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Wiseco Powersports Garage Buddy Engine Rebuild Kits for 1987-2006 YFZ350 BANSHEE - PWR100-660

Garage Buddy Engine Rebuild, Banshee

Part Number: WIS-PWR100-660

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Vertex Top-End Piston Kits for 1998-2008 65 SX - VTK22481CD

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22481CD

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Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

Cylinder Works Power Valve Kits for 1999-2023 YZ250, 2022-2023 YZ250 MONSTER ENERGY YAMAHA RACING EDITION - 422-2002PV

Top End Engine Kits CYL WORKS BIG BORE POWER VALVE CYL WORKS BIG BORE POWER VALVE INCL SIDE VALVES YZ250 '99-1

Part Number: CLW-CW-PV-K02

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Vertex Complete Engine Rebuild Kits for 1998-2000 YZ125 - WR101-093

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, Yamaha, Kit

Part Number: VPX-WR101-093

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1992-1999 CR125R - NX-10000-BK

Repair Kit, Top End, 53.950mm Bore, 8.80 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10000-BK

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today