Engine Rotating Assemblies & Rebuild Kits

Big Bore Kit, 107 in., Drop-In, 3.937 in. Bore, Wrinkle Black Cylinders with Highlighted Fins, Harley-Davidson®, Kit

Part Number: SSY-910-0500

Not Yet Reviewed

Estimated Ship Date: Sep 9, 2025 if ordered today

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• $10.00 Summit Bucks
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Engine Rebuild, Hypereutectic Dish Top, Plasmamoly Rings, Stock Bore, .010 in. Under Bearings, Chevy, LS

Part Number: CMB-08-0073

Not Yet Reviewed

Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Engine Rebuild, Hypereutectic Dish, 4.040 in. Bore, .020 in. Crankshaft Undersize Rod, .020 in. Crankshaft Undersize Main, Chevy 383

Part Number: SUM-SBCKIT2-422

5.0 out of 5 stars ( 1 )

Cannot be shipped Internationally

• Restricted
• Free Shipping

Pro LS 4340 Piston and Rod Kit, 346 Cid., 3.898 bore, 3.622 stroke, 6.125 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR36L8983

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Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 403 Cid., 4.005 bore, 4.000 stroke, 6.125 rod, 8cc dish, 11:1 @ 65cc, 10.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400058

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Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 408 Cid., 4.030 bore, 4.000 stroke, 6.125 rod, 20cc dish, 9.8:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4003020

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Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 410 Cid., 4.040 bore, 4.000 stroke, 6.125 rod, 8cc dish, 11.2:1 @ 65cc, 10.6:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400408

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Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Pro LS Piston and Rod Kit, 365 Cid., 4.005 bore, 3.622 stroke, 6.098 rod, 2cc Flat Top, 10.8:1 @ 65cc, 10.2:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR360052

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 364 Cid., 4.000 bore, 3.622 stroke, 6.125 rod, 12cc Dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L00012

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Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Engine Rotating Kits, Pro LS Crank and Rod Kits, Forged 4340 Steel, 6.098 in. Connecting Rod Length, 3.622 in. Stroke, Chevy, 5.3L, 6.0L, 6.2L, Kit

Part Number: SUM-CR3658098

Not Yet Reviewed

Estimated Ship Date: Monday 8/18/2025

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

Not Yet Reviewed

Estimated Ship Date: Monday 8/18/2025

Pro LS 4340 Piston and Rod Kit, 416 Cid., 4.070 bore, 4.000 stroke, 6.125 rod, 6cc dish, 11.5:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400706

Not Yet Reviewed

Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Rebuild Kit, Complete Bottom End, KTM, Kit

Part Number: HRI-CBK0006

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00117

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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• Special Order

Rebuild Kit, Complete Bottom End, Yamaha, YZ85, Kit

Part Number: HRI-CBK0076

Not Yet Reviewed

Estimated Ship Date: Aug 29, 2025 if ordered today

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BOTTOM END KIT Polaris

Part Number: HRI-HR00114

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Cylinder Kit, Forged Piston, 5.00mm Oversize Bore, Polaris, 10.60 to 1 Compression Ratio, Kit

Part Number: CLW-61001-K01

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Estimated Ship Date: Sep 8, 2025 if ordered today

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

Part Number: CLW-21004-K01

Not Yet Reviewed

Estimated Ship Date: Monday 8/18/2025

• Free Shipping

Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0053

Not Yet Reviewed

Estimated Ship Date: Monday 8/18/2025

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Engine Kit, Crank, Moly Ring, Rod, Main, Gaskets, Oil Pump, Timing Set, Chevy, 357, Kit

Part Number: SES-3484000050

Not Yet Reviewed

Cannot be shipped Internationally

• Oversize
• Restricted

Engine Kit, Moly Ring, Rod, Main, Gaskets, Oil Pump, Timing Set, Chevy, 360, Kit

Part Number: SES-3486000000

Not Yet Reviewed

Cannot be shipped Internationally

• Restricted
• Free Shipping

Big Bore Cylinder Kit, Forged Piston, 80mm Bore, Yamaha, Motorcycle, Kit

Part Number: CLW-21002-K01

Not Yet Reviewed

Estimated Ship Date: Sep 9, 2025 if ordered today

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• Special Order

BOTTOM END KIT Yamaha

Part Number: HRI-CBK0015

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Big Bore Cylinder Kit, Forged Piston, 96mm Bore, for use on Honda®, Motorcycle, Kit

Part Number: CLW-10002-K01

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Estimated Ship Date: Sep 8, 2025 if ordered today

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Gasket Kit COMPLETE BOTTOM END KIT COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0182

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Estimated Ship Date: Sep 3, 2025 if ordered today

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• Special Order