Engine Rotating Assemblies & Rebuild Kits

Cylinder Works Standard Bore Cylinder Kits for 2004-2013 YFZ450, 2006-2007 YFZ450 BILL BALANCE EDITION, 2007-2008 YFZ450 SE - 422-20001KHC

Cylinder Kit, Forged Piston, Standard Bore, Yamaha, 13.00 to 1 Compression Ratio, Kit

Part Number: CLW-20001-K01HC

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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 2014-2025 KX85, 2022 KX85L - NX-20013-BK

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

Part Number: NTI-NX-20013-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 NA-10008-2K1

Repair Kit, Top End, 92.46mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10008-2K1

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-10042-4K

TOP END REPAIR KIT

Part Number: NTI-NA-10042-4K

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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 1998-2003 300 2X4, 1998-2005 300 4X4, 2004 300 4X4 MRP - NA-11001K

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-11001K

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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 2008 MAXXER 300, 2009-2010 MONGOOSE 300, 2005-2010 MXU300 - NA-20005-4K1

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

Part Number: NTI-NA-20005-4K1

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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 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: 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 1985-2001 YFM80 BADGER, 2005-2008 YFM80 GRIZZLY, 2002-2008 YFM80W RAPTOR - NA-40080K

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-40080K

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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 1989-2000 RM125 - NX-30000-CK

Repair Kit, Top End, 53.96mm Bore, 8.30 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30000-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 1991-2001 RM80 - NX-30080-BK

TOP END REPAIR KIT

Part Number: NTI-NX-30080-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

Cylinder Works Standard Bore Cylinder Kits 422-20104K

Cylinder Kit, Forged Aluminum, Standard Bore, Yamaha, Set

Part Number: CLW-20104-K01

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Estimated Ship Date: Today

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Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R5836L7852

Pro LS Rotating Assembly, 326 Cid, 3.785 bore, Standard 3.622 stroke, 58x, 6.125 rod, 2cc dome, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Ring, H Bearing

Part Number: SUM-R5836L7852

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Estimated Ship Date: Today

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Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R2436L06512

Pro LS 4340 Rotating Assembly, 376 Cid., 4.065 bore, 3.622 stroke, 24X, 6.125 rod, 12cc dish, 9.9:1 @ 65cc, 9.4:1 @ 70cc, File-Fit rings, H Bearings

Part Number: SUM-R2436L06512

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Estimated Ship Date: Today

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Manley Engine Rotating Kits 39393H

Engine Rotating Kits, KIT-FORD 351C 3.850/4.030

Part Number: MAN-39393H

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Hot Rods Inc Powersports Bottom End Engine Kits HR00193

BOTTOM END KIT

Part Number: HRI-HR00193

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Hot Rods Inc Powersports Bottom End Engine Kits HR00214

BOTTOM END KIT

Part Number: HRI-HR00214

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Vertex Pistons Powersports Top End Engine Kits VTK23928B-3

TOP END PISTON KIT

Part Number: VPX-VTK23928B-3

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

Hot Rods Inc Powersports Bottom End Engine Kits HR00237

BOTTOM END KIT

Part Number: HRI-HR00237

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Hot Rods Inc Powersports Bottom End Engine Kits HR00253

BOTTOM END KIT POL

Part Number: HRI-HR00253

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Hot Rods Inc Powersports Bottom End Engine Kits HR00187

BOTTOM END KIT

Part Number: HRI-HR00187

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

Hot Rods Inc Powersports Bottom End Engine Kits HR00198

BOTTOM END KIT CAN

Part Number: HRI-HR00198

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Hot Rods Inc Powersports Bottom End Engine Kits HR00210

BOTTOM END KIT

Part Number: HRI-HR00210

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0123

Rebuild Kit, Complete Bottom End, Polaris, 800, Kit

Part Number: HRI-CBK0123

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

Manley Rotating Assemblies 28632RH

BBC 632 4.750 STROKE/4.600/-3cc

Part Number: MAN-28632RH

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0157

Rebuild Kit, Complete Bottom End, Stroker Crank, Kawasaki, Kit

Part Number: HRI-CBK0157

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today