Engine Rotating Assemblies & Rebuild Kits

Summit Racing™ Pro LS Piston and Rod Kits SUM-PR409035

Pro LS 4340 Piston and Rod Kit, 383 Cid., 3.903 bore, 4.000 stroke, 6.125 rod, 5cc dish, 10.9:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR409035

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Namura Technologies Top-End Repair Kits for 1991-2001 RM80 - NX-30080-CK

TOP END REPAIR KIT

Part Number: NTI-NX-30080-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

Hot Rods Complete Bottom End Rebuild Kits for 2001 YZ250 - CBK0079

BOTTOM END KIT Yamaha

Part Number: HRI-CBK0079

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

Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R2436L7852

Pro LS Rotating Assembly, 326 Cid, 3.785 bore, Standard 3.622 stroke, 24X, 6.125 rod, 2cc dome, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Ring, H Bearing

Part Number: SUM-R2436L7852

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Hot Rods Complete Bottom End Rebuild Kits CBK0091

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

Part Number: HRI-CBK0091

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Cylinder Works Big Bore Cylinder Kits 422-21003K2

Cylinder Kit, Forged Aluminum, 3.00mm Oversize Bore, Yamaha, Set

Part Number: CLW-21003-K02

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Vertex Top-End Piston Kits for 2013-2016 CRF450R - VTKTC23855B

TOP END KIT FR WITH CAM CHAIN

Part Number: VPX-VTKTC23855B

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Hot Rods Complete Bottom End Rebuild Kits HR00109

BOTTOM END KIT Polaris

Part Number: HRI-HR00109

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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

Namura Technologies Top-End Repair Kits for 1997-2001 TRX250TM FOURTRAX RECON - NA-10025-2K

Repair Kit, Top End, 68.95mm Bore, 9.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10025-2K

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

Hot Rods Complete Bottom End Rebuild Kits for 1999-2000 YZ250 - CBK0078

BOTTOM END KIT Yamaha

Part Number: HRI-CBK0078

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 Top-End Piston Kits VTK23429CD

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK23429CD

4.0 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

Hot Rods Complete Bottom End Rebuild Kits for 2005-2008 TRX400EX SPORTRAX, 2009-2014 TRX400X - CBK0016

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

Part Number: HRI-CBK0016

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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

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

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Hot Rods Complete Bottom End Rebuild Kits HR00106

BOTTOM END KIT Polaris

Part Number: HRI-HR00106

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

Namura Technologies Top-End Repair Kits for 1998-2003 300 2X4, 1998-2005 300 4X4 - NA-11001-2K

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-11001-2K

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Namura Technologies Top-End Repair Kits for 1990-1993 TRAIL BOSS 350L 4X4, TRAIL BOSS 350L 2X4, 1993 BIG BOSS 350L 6X6 - NA-50001-2K

TOP END REPAIR KIT

Part Number: NTI-NA-50001-2K

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 2001-2002 KX125 - NX-20001K

Repair Kit, Top End, 54.500mm Bore, 9.00 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20001K

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 1995-2003 TRX400FW FOREMAN 4X4 - NA-10001-2K

Repair Kit, Top End, 86.470mm Bore, 8.20 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10001-2K

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 1990-2026 PW50 - NX-40005-4K

TOP END REPAIR KIT

Part Number: NTI-NX-40005-4K

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 2003-2004 250 SX - NX-70051K

TOP END REPAIR KIT

Part Number: NTI-NX-70051K

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

Summit Racing™ Pro LS Piston and Rod Kits SUM-PR408205

Pro LS 4340 Piston and Rod Kit, 367 Cid., 3.820 bore, 4.000 stroke, 6.125 rod, 5cc dish, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR408205

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Cylinder Works Big Bore Cylinder Kits for 2008-2009 TRX700XX - 422-11009K

Cylinder Kit, Forged Piston, 3.00mm Oversize Bore, for use on Honda®, 10.50 to 1 Compression Ratio, Kit

Part Number: CLW-11009-K01

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

Summit Racing™ Pro LS 5.7L Rotating Assemblies SUM-R24369033

Pro LS 4340 Rotating Assembly, 347 Cid., 3.903 bore, 3.622 stroke, 24X, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit ring, H Bearing

Part Number: SUM-R24369033

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Eagle Competition Rotating Assemblies B12501030

Engine Rotating Assembly, Competition, Forged Crank, Forged Pistons, H-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-B12501030

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Summit Racing™ Pro LS Crank and Rod Kits SUM-CR4024098

Engine Rotating Kits, Pro LS Crank and Rod Kits, Forged 4340 Steel, 6.098 in. Connecting Rod Length, 4.000 in. Stroke, Chevy, 5.3L, 5.7L, 6.0L, Kit

Part Number: SUM-CR4024098

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