2003 Engine Kits & Rotating Assemblies Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

Summit Racing™ Pro LS Piston and Rod Kits SUM-PR4000520

Pro LS 4340 Piston and Rod Kit, 403 Cid., 4.005 bore, 4.000 stroke, 6.125 rod, 20cc dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4000520

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Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Summit Racing™ Pro LS Piston and Rod Kits SUM-PR4004020

Pro LS 4340 Piston and Rod Kit, 410 Cid., 4.040 bore, 4.000 stroke, 6.125 rod, 20cc dish, 9.8:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4004020

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Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R584078012

Pro LS 4340 Rotating Assembly, 359 Cid., 3.780 bore, 4.000 stroke, 58x, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R584078012

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Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R584078512

Pro LS 4340 Rotating Assembly, 360 Cid., 3.785 bore, 4.000 stroke, 58x, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R584078512

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Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Summit Racing™ Pro LS 5.7L Rotating Assemblies SUM-R584089816

Pro LS 4340 Rotating Assembly, 382 Cid., 3.898 bore, 4.000 stroke, 58x, 6.125 rod, 16cc dish, 9.7:1 @ 65cc, 9.4:1 @ 68cc, File-Fit Rings, H Bearings

Part Number: SUM-R584089816

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

Scat Modern Muscle Engine Rotating Assemblies 1-48521

Engine Rotating Kits, Rotating Assembly, Forged Crank, Forged Pistons, H-Beam Rods, Dodge, 426 C.I.D., Hemi Gen III, Kit

Part Number: SCA-1-48521

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

Scat Modern Muscle Engine Rotating Assemblies 1-48521BI

Engine Rotating Kits, Rotating Assembly, Forged Crank, Forged Pistons, H-Beam Rods, Dodge, 426 C.I.D., Hemi Gen III, Balanced, Kit

Part Number: SCA-1-48521BI

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

Kibblewhite Cylinder Head Service Kits for 1993-2018 XR650L - 30-33490

Cyl. Head Serv. Kit, Honda®, XR 650L, 1993-2018

Part Number: KPM-30-33490

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1993-2008 TRX300EX SPORTRAX, 2009 TRX300X - NA-10005-2K

Repair Kit, Top End, 74.45mm Bore, 8.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10005-2K

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Cylinder Works Big Bore Cylinder Kits for 2002-2008 CRF450R - 422-11002K

Big Bore Cylinder Kit, Forged Piston, 100mm Bore, for use on Honda®, Motorcycle, Kit

Part Number: CLW-11002-K01

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Eagle Competition Rotating Assemblies 231503937

ROTATING ASSEMBLY

Part Number: ESP-231503937

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 14400000

Rotating Assembly, Competition, Forged 4340 Crankshaft, Forged Dish Pistons, 1 pc. Seal, Ford, 285, Kit

Part Number: ESP-14400000

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 14404000

Engine Rotating Assembly, Competition, Forged Crank, Forged Pistons, H-Beam Rods, Ford, Modular V8, Kit

Part Number: ESP-14404000

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 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: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 1999-2008 TRX400EX SPORTRAX, 2009-2014 TRX400X, 1996-2004 XR400R - NA-10004K

Repair Kit, Top End, 88.95mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10004K

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Namura Technologies Top-End Repair Kits for 2001-2005 KX125 - NX-20001-BK

Piston, TOP END REPAIR KIT

Part Number: NTI-NX-20001-BK

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Scat Modern Muscle Engine Rotating Assemblies 1-48507

Engine Rotating Assembly, Competition, Steel Crank, Forged Pistons, I-Beam Rods, Dodge, 392 Small Block, Kit

Part Number: SCA-1-48507

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Eagle Competition Rotating Assemblies 127043810

COMPETITION ASSEMBLY CHEV LS 4.8/5.3

Part Number: ESP-127043810

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 128783800

ROTATING ASSEMBLY

Part Number: ESP-128783800

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 121544005

COMPETITION ASSEMBLY CHEV LS2

Part Number: ESP-121544005

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 128264030

ROTATING KITS

Part Number: ESP-128264030

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 127003820

COMPETITION ASSEMBLY CHEV LS 4.8/5.3

Part Number: ESP-127003820

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 111534560

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

Part Number: ESP-111534560

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 127603780

COMPETITION ASSEMBLY CHEV LS 4.8/5.3

Part Number: ESP-127603780

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Eagle Competition Rotating Assemblies 127623780

COMPETITION ASSEMBLY CHEV LS 4.8/5.3

Part Number: ESP-127623780

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today