2003 Engine Kits & Rotating Assemblies Engines & Components - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $125 at Summit Racing

Vertex Complete Engine Rebuild Kits for 2003-2012 85 SX (17/14), 2005-2010 85 SX (19/16), 2012 85 SXS - WR101-056

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

Part Number: VPX-WR101-056

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Summit Racing™ Engine Rebuild Kits 08-0069

Engine Rebuild Kit, Hypereutectic Flat Top, Plasmamoly Rings, Stock Bore, .010 in. Under Bearings, Chevy, LS

Part Number: CMB-08-0069

Not Yet Reviewed

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Cylinder Works Standard Bore Cylinder Kits for 2002-2008 CRF450R - 422-10002K

Big Bore Cylinder Kit, Forged Piston, 96mm Bore, for use on Honda®, Motorcycle, Kit

Part Number: CLW-10002-K01

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 1998-2005 KX100, 2003 RM100 - CBK0052

BOTTOM END KIT

Part Number: HRI-CBK0052

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

Federal Mogul Engine Re-Ring Kits 205-6378B011

Engine Re-Ring, Moly, 4 in. Bore, .010 in. Rod, Dodge, 360, Kit

Part Number: FEM-205-6378B011

Not Yet Reviewed

Estimated Ship Date: Today

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Vertex Top-End Piston Kits for 2002-2006 CRF450R - VTKTC22900A

TOP END KIT FHC WITH CAM CHAIN

Part Number: VPX-VTKTC22900A

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1985-2003 KX60 - NX-20060K

Repair Kit, Top End, 42.950mm Bore, 8.40 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20060K

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Vertex Top-End Piston Kits for 2003-2005 200 EXC, 2006-2009 200 XC, 2006-2016 200 XC-W - VTK22926C-1

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22926C-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 2006-2007 OUTLAW 500, 2003-2007 PREDATOR 500 - NA-50005K

Repair Kit, Top End, 99.150mm Bore, 10.80 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50005K

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Vertex Top-End Piston Kits for 2003-2004 CR85R, CR85RB EXPERT - VTK22863B

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22863B

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Vertex Top-End Piston Kits for 2002-2023 RM85, 2003-2012 RM85L - VTK22877B

Top-End Piston Kit, Cast Aluminum, 48.000mm Bore, Suzuki, Kit

Part Number: VPX-VTK22877B

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50000-2K

Repair Kit, Top End, 72.46mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50000-2K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 2001-2003 RM125 - NX-30004-CK

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-30004-CK

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Estimated Ship Date: May 15, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1989-2004 YFA-1 BREEZE125, 2004-2013 YFM125 GRIZZLY - NA-40019-2K

TOP END REPAIR KIT

Part Number: NTI-NA-40019-2K

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1988-2006 YFS200 BLASTER - NA-40003K

Repair Kit, Top End, 65.920mm Bore, 6.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40003K

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-30010K

Repair Kit, Top End, 81.96mm Bore, 9.00 to 1 Compression Ratio, Arctic Cat, Suzuki, Kit

Part Number: NTI-NA-30010K

Not Yet Reviewed

Estimated Ship Date: Today

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Namura Technologies Top-End Repair Kits for 1985-2003 KX60 - NX-20060-BK

TOP END REPAIR KIT

Part Number: NTI-NX-20060-BK

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1985-2003 KX60 - NX-20060-CK

TOP END REPAIR KIT

Part Number: NTI-NX-20060-CK

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1981-2026 PW50 - NX-40005K

Repair Kit, Top End, 40.000mm Bore, 6.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40005K

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 2001-2014 TRX500FA FOURTRAX FOREMAN RUBICON, 2004-2008 TRX500FGA FOURTRAX FOREMAN RUBICON GPSCAPE, 2011-2014 TRX500FPA FOURTRAX FOREMAN RUBICON WITH EPS - NA-10008K

Repair Kit, Top End, 91.96mm Bore, 9.20 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10008K

Not Yet Reviewed

Estimated Ship Date: Today

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Namura Technologies Top-End Repair Kits for 2003-2006 KFX80, 1987-2006 LT80 QUADSPORT - NA-30080-2K

TOP END REPAIR KIT

Part Number: NTI-NA-30080-2K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Namura Technologies Top-End Repair Kits NA-50004-6K

Repair Kit, Top End, 93.47mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-6K

Not Yet Reviewed

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Namura Technologies Top-End Repair Kits for 2002-2014 LT-F250 OZARK, 2002 LT-F250 QUADRUNNER, 2004-2009 LT-Z250 QUADSPORT Z - NA-30008-2K

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30008-2K

Not Yet Reviewed

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Hot Rods Complete Bottom End Rebuild Kits CBK0091

Rebuild Kit, Complete Bottom End, Kawasaki, KX125, Kit

Part Number: HRI-CBK0091

Not Yet Reviewed

Estimated Ship Date: Today

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Hot Rods Complete Bottom End Rebuild Kits for 2001-2005 KX85 - CBK0053

Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0053

Not Yet Reviewed

Estimated Ship Date: Today

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