Engine Rotating Assemblies & Rebuild Kits

Engine Rebuild, Hypereutectic Dish, 4.060 in. Bore, .030 in. Crankshaft Undersize Rod, .030 in. Crankshaft Undersize Main, Chevy 383

Part Number: SUM-SBCKIT2-633

Not Yet Reviewed

Cannot be shipped Internationally

• Restricted
• Free Shipping

Engine Rebuild, Hypereutectic Flat, 4.000 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 350, Kit

Part Number: SUM-SBCKIT3-011

Not Yet Reviewed

Cannot be shipped Internationally

• Restricted
• Free Shipping

Pro LS 4340 Rotating Assembly, 376 Cid., 4.065 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-R5836L0652

Not Yet Reviewed

Estimated Ship Date: Today

Pro LS 4340 Rotating Assembly, 377 Cid., 4.070 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-R5836L0702

Not Yet Reviewed

Estimated Ship Date: Today

Pro LS 4340 Rotating Assembly, 377 Cid., 4.075 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-R5836L0752

Not Yet Reviewed

Estimated Ship Date: Today

Pro LS Rotating Assembly, 370 Cid., 4.030 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-R58360302

Not Yet Reviewed

Estimated Ship Date: Today

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

Estimated Ship Date: Today

HD IN-FRAME KIT

Part Number: CLE-4685133STD

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

HD IN-FRAME KIT

Part Number: CLE-4805021STD

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

ROTATING ASSEMBLY

Part Number: CPI-KV1291H-CS

Not Yet Reviewed

Estimated Ship Date: Oct 30, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

3.622" stroke, internal balance, billet 4340 steel, center-counterweighted Chevrolet Gen III "LS", no reluctor

Part Number: ESP-334536236100

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

4.000" stroke, internal balance, billet 4340 steel, center-counterweighted Chevrolet Gen III "LS", no reluctor

Part Number: ESP-334540016100

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

VERTEX PISTON KIT

Part Number: VPX-23965A

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

VERTEX PISTON KT HC FORGED

Part Number: VPX-24028A

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

VERTEX PISTON KT HC FORGED

Part Number: VPX-23833A

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

S&S Cycle 2017+ M8 Models 4.250in Bore Unhoned Front Cylinder - Black Granite w/ Highlight

Part Number: SSY-910-0740

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• $10.00 Summit Bucks
• Special Order

COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0012

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Rebuild Kit, Complete Bottom End, Kawasaki, KX65, Kit

Part Number: HRI-CBK0100

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Rebuild Kit, Complete Bottom End, Suzuki, RM85, Kit

Part Number: HRI-CBK0103

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Rebuild Kit, Complete Bottom End, for use on Honda®, TRX450R, TRX450ER, Kit

Part Number: HRI-CBK0106

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Gasket Kit BOTTOM END KIT BOTTOM END KIT

Part Number: HRI-CBK0178

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0190

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00109

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Yamaha

Part Number: HRI-HR00124

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-20014K

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Special Order