2012 Engine Kits & Rotating Assemblies Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

S&S Cycle 106 in. Big Bore Kits 910-0199

S&S Cycle 99-16 BT Replacement 3-7/8in Bore Cylinder & Piston Kit For S&S 106in Stroker Kit - Silver

Part Number: SSY-910-0199

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

S&S Cycle 1200cc to 1250cc Hooligan Cylinder Kits 910-0702

S&S Cycle 00-21 Sportster Models 1200cc to 1250cc Hooligan Kit - Silver

Part Number: SSY-910-0702

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

Cylinder Works Standard Bore Cylinder Kits 422-20004KH

Cylinder Kit, Forged Piston, Standard Bore, Yamaha, 11.10 to 1 Compression Ratio, Kit

Part Number: CLW-20004-K01HC

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

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Estimated Ship Date: Apr 14, 2026 if ordered today

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

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 if ordered today

Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R584008021

Pro LS 4340 Rotating Assembly, 417 Cid., 4.080 bore, 4.000 stroke, 58x, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R584008021

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 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

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 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

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 if ordered today

Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R58367857

Pro LS Rotating Assembly, 326 Cid., 3.785 bore, Standard 3.622 stroke, 58x, 6.098 rod, 7cc dish, 9.7:1 @ 61cc, 9.3:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R58367857

Not Yet Reviewed

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Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R24368207

Pro LS Rotating Assembly, 332 Cid., 3.820 bore, Standard 3.622 stroke, 24X, 6.098 rod, 7cc dish, 9.9:1 @ 61cc, 9.4:1 @ 65cc, File-Fit ring, H Bearing

Part Number: SUM-R24368207

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 if ordered today

Eagle Competition Rotating Assemblies 128294125

COMPETITION ASSEMBLY CHEV LS7

Part Number: ESP-128294125

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Pro Street Rotating Assemblies 629524070

PRO STREET ASSEMBLY CHEV LS3

Part Number: ESP-629524070

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Heavy-Duty Rotating Assemblies 329204125

HEAVY DUTY ASSEMBLY CHEV LS7

Part Number: ESP-329204125

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Heavy-Duty Rotating Assemblies 329254130

HEAVY DUTY ASSEMBLY CHEV LS7

Part Number: ESP-329254130

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Pro Street Rotating Assemblies 627623820

PRO STREET ASSEMBLY CHEV 4.8/5.3 LS

Part Number: ESP-627623820

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Pro Street Rotating Assemblies 627023820

PRO STREET ASSEMBLY CHEV 4.8/5.3 LS

Part Number: ESP-627023820

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Competition Rotating Assemblies 86122865

COMPETITION ASSEMBLY MITSUBISHI 4B11T

Part Number: ESP-86122865

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Competition Rotating Assemblies 89024100

COMPETITION ASSEMBLY SUBARU EJ25

Part Number: ESP-89024100

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Competition Rotating Assemblies 89114100

COMPETITION ASSEMBLY SUBARU EJ25

Part Number: ESP-89114100

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Competition Rotating Assemblies 128394135

COMPETITION ASSEMBLY CHEV LS7

Part Number: ESP-128394135

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Pro Street Rotating Assemblies 627623810

PRO STREET ASSEMBLY CHEV 4.8/5.3 LS

Part Number: ESP-627623810

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Competition Rotating Assemblies 128244130

COMPETITION ASSEMBLY CHEV LS7

Part Number: ESP-128244130

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Scat Modern Muscle Engine Rotating Assemblies 1-44606BI

Engine Rotating Assembly, Competition, Steel Crank, Forged Pistons, I-Beam Rods, Chevy, 428 Small Block, Kit

Part Number: SCA-1-44606BI

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Scat Modern Muscle Engine Rotating Assemblies 1-44704BI

Engine Rotating Assembly, Competition, Steel Crank, Forged Pistons, H-Beam Rods, Chevy, 421 Small Block, Kit

Part Number: SCA-1-44704BI

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Eagle Pro Street Rotating Assemblies 637314070

PRO STREET ASSEMBLY CHEV LS3

Part Number: ESP-637314070

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Eagle Competition Rotating Assemblies 137914065

COMPETITION ASSEMBLY CHEV LS3

Part Number: ESP-137914065

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today