Engine Rotating Assemblies & Rebuild Kits

Namura Technologies Top-End Repair Kits for 1989-2003 RM125 - NX-30000-BK

Repair Kit, Top End, 53.95mm Bore, 8.30 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30000-BK

Not Yet Reviewed

Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R58360402

Pro LS Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360402

Not Yet Reviewed

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Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R5836L0802

Pro LS 4340 Rotating Assembly, 378 Cid., 4.080 bore, 3.622 stroke, 58x, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 11:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L0802

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Namura Technologies Top-End Repair Kits for 1987-1993 LT230E QUADRUNNER, 1985-1986 LT230GE, 1985-1988 LT230S QUADSPORT - NA-30000K

Repair Kit, Top End, 65.97mm Bore, 9.20 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NA-30000K

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Scat Engine Rotating Assemblies 1-42450

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

Part Number: SCA-1-42450

Not Yet Reviewed

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR4007021

Pro LS 4340 Piston and Rod Kit, 416 Cid., 4.070 bore, 4.000 stroke, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4007021

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Eagle Street and Strip Rotating Assemblies B13202L00053

Engine Rotating Assembly, Street/Strip, Cast Crank, Hypereutectic Piston, I-Beam Rod, Chevy, Small Block, Kit

Part Number: ESP-B13202L00053

Not Yet Reviewed

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Hot Rods Complete Bottom End Rebuild Kits for 2009 KX250F - CBK0127

Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0127

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R2436L08012

Pro LS 4340 Rotating Assembly, 378 Cid., 4.080 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-R2436L08012

Not Yet Reviewed

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Eagle Street Performance Rotating Assemblies with Silv-O-Lite Claimer Pistons B15455E060

Engine Rotating Assembly, Street, Cast Crank, Hypereutectic Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-B15455E060

Not Yet Reviewed

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Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R58400756

Pro LS 4340 Rotating Assembly, 417 Cid., 4.075 bore, 4.000 stroke, 58x, 6.125 rod, 6cc dish, 11.5:1 @ 65cc, 11:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58400756

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R583600012

Pro LS 4340 Rotating Assembly, 364 Cid., 4.000 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583600012

Not Yet Reviewed

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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

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1990-2026 PW50 - NX-40005-2K

TOP END REPAIR KIT

Part Number: NTI-NX-40005-2K

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Manley Rotating Assemblies 290940RH

ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290940RH

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: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

Quadboss Powersports Top End Engine Kits 563960

QB FULL TOP END SET

Part Number: QDB-56-3960

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

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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Cylinder Works Big Bore Cylinder Kits 422-21003K2

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

Part Number: CLW-21003-K02

Not Yet Reviewed

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Hot Rods Complete Bottom End Rebuild Kits HR00109

BOTTOM END KIT Polaris

Part Number: HRI-HR00109

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

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

TOP END KIT FR WITH CAM CHAIN

Part Number: VPX-VTKTC23855B

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 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 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 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

Not Yet Reviewed

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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: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 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 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today