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

Federal Mogul Engine Re-Ring Kits 205658M-320

Engine Re-Ring, Moly, 4.030 in. Bore, .020 in. Rod, .Standard Main, Chevy, 350, Kit

Part Number: FEM-205658M-320

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Federal Mogul Engine Re-Ring Kits 205658M-010

Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-205658M-010

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Federal Mogul Engine Re-Ring Kits 205658M-011

Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 350, Kit

Part Number: FEM-205658M-011

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Federal Mogul Engine Re-Ring Kits 205658M-012

Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, .020 in. Main, Chevy, 350, Kit

Part Number: FEM-205658M-012

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Federal Mogul Engine Re-Ring Kits 205658M-023

Engine Re-Ring, Moly, 4 in. Bore, .020 in. Rod, .030 in. Main, Chevy, 350, Kit

Part Number: FEM-205658M-023

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Federal Mogul Engine Re-Ring Kits 205658M-300

Engine Re-Ring, Moly, 4.030 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-205658M-300

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Federal Mogul Engine Re-Ring Kits 2056156-00

Engine Re-Ring, Moly, 4.000 in. Bore, Standard Rod, Chevy, 350, Kit

Part Number: FEM-2056156-00

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BBR Motorsports Powersports Top End Engine Kits 411-HCF-1911

PISTON KIT - 195CC BORE KIT

Part Number: BRM-411-HCF-1911

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Estimated Ship Date: Jan 12, 2026 if ordered today

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BBR Motorsports Powersports Top End Engine Kits 411-HXR-5411

88CC BIG BORE PISTON KIT

Part Number: BRM-411-HXR-5411

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0045

Rebuild Kit, Complete Bottom End, for use on Honda®, Kit

Part Number: HRI-CBK0045

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-50004-2K

Repair Kit, Top End, 92.47mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-2K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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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: Jan 12, 2026 if ordered today

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Vertex Top-End Piston Kits for 1997-2001 CR250R - VTK22581B

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22581B

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 1992-2002 CR80R, 1996-2002 CR80RB EXPERT - CBK0001

Rebuild Kit, Complete Bottom End, for use on Honda®, Kit

Part Number: HRI-CBK0001

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Estimated Ship Date: Jan 2, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1998-2004 TRX450FE FOURTRAX FOREMAN ES, TRX450FM FOURTRAX FOREMAN S - NA-10000-2K

Repair Kit, Top End, 90.460mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10000-2K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Namura Technologies Top-End Repair Kits NA-20005K

Cylinder Head NAMURA TOP END REPAIR KIT NAMURA TOP END REPAIR KIT

Part Number: NTI-NA-20005K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Namura Technologies Top-End Repair Kits NA-40010K

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: Jan 12, 2026 if ordered today

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Namura Technologies Top-End Repair Kits for 2003-2005 RM250 - NX-30027K

Repair Kit, Top End, 66.34mm Bore, 8.70 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30027K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-20075K

Repair Kit, Top End, 84.96mm Bore, 9.30 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20075K

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 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

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Vertex High-Compression Piston Kits 23833A

VERTEX PISTON KT HC FORGED

Part Number: VPX-23833A

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Namura Powersports Piston and Ring Kits 185-F4033

TOP END GASKET KIT, TOP END REPAIR KIT (FORGED PISTON)

Part Number: NTI-FX-40033K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-10027-2K

Repair Kit, Top End, 68.95mm Bore, 9.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10027-2K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1986 SRX600, 1984-1986 XT600, 1998-2001 YFM600FW GRIZZLY 4X4 - NA-40007-2K

Repair Kit, Top End, 95.500mm Bore, 8.50 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40007-2K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Namura Technologies Top-End Repair Kits NA-40011-2K

Repair Kit, Top End, 84.950mm Bore, 10.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40011-2K

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today