Engine Rotating Assemblies & Rebuild Kits

Pro LS Rotating Assembly, 325 Cid., 3.780 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-R58367807

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Pro LS 4340 Piston and Rod Kit, 364 Cid., 3.810 bore, 4.000 stroke, 6.125 rod, 5cc dish, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR408105

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Pro LS Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.8:1 @ 65cc, 10.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360052

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 367 Cid., 3.820 bore, 4.000 stroke, 24X, 6.125 rod, 12cc dish, 10:2 @ 61cc, 9.8:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R244082012

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Engine Rebuild, Hypereutectic Flat, 4.020 in. Bore, 0.010 in. Oversize Rod Bearings, 0.010 in. Oversize Main Bearings, Chevy, 350, Kit

Part Number: SUM-SBCKIT3-211

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Engine Re-Ring, 4.040 in. Bore, .020 in. Rod, .020 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-422

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Pro LS Rotating Assembly, 325 Cid, 3.780 bore, Standard 3.622 stroke, 58x, 6.125 rod, 2cc dome, 10.9:1 @ 61cc, 10.3:1 @ 65cc, File-Fit Ring, H Bearing

Part Number: SUM-R5836L7802

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 24X, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.4:1 @ 65cc, File-Fit ring, H Bearings

Part Number: SUM-R24368102

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Engine Rebuild, Hypereutectic Flat, 4.030 in. Bore, .020 in. Rod, .020 in. Main, Chevy, 350, Kit

Part Number: SUM-SBCKIT3-322

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BOTTOM END KIT Honda

Part Number: HRI-CBK0042

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Estimated Ship Date: May 11, 2026 if ordered today

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Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 58x, 6.125 rod, 2cc dome, 11:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R5836L8102

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 346 Cid., 3.898 bore, 3.622 stroke, 24X, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit ring, H Bearings

Part Number: SUM-R24368983

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

TOP END REPAIR KIT

Part Number: NTI-NA-20001-4K

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Estimated Ship Date: May 18, 2026 if ordered today

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Engine Re-Ring, 4.000 in. Bore, .010 in. Rod, .010 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-011

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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ROTATING ASSEMBLY KIT-BBC 572 4.250/4.625 -3cc F

Part Number: MAN-38572RHXX

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Estimated Ship Date: Jun 8, 2026 if ordered today

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Pro LS 4340 Rotating Assembly, 347 Cid., 3.903 bore, 3.622 stroke, 24X, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit ring, H Bearing

Part Number: SUM-R24369033

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-039

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Estimated Ship Date: May 19, 2026 if ordered today

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Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 8.50 to 1 Compression, for use on Honda®, Kit

Part Number: VPX-WR00037

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Estimated Ship Date: May 18, 2026 if ordered today

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

Part Number: HRI-CBK0076

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Estimated Ship Date: May 8, 2026 if ordered today

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Engine Rebuild, Cast Flat, 3.736 in. Bore, Standard Rod, Standard Main, Chevy, 305, Kit

Part Number: FEM-EMKP1024C000

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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KIT-SBC 434 4.000/4.125

Part Number: MAN-290300

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Estimated Ship Date: Jun 8, 2026 if ordered today

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Pro LS 4340 Rotating Assembly, 370 Cid., 4.030 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583603012

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Engine Rebuild, Hypereutectic Flat, 4.060 in. Bore, .020 in. Rod, .020 in. Main, Chevy, 350, Kit

Part Number: SUM-SBCKIT3-622

1.0 out of 5 stars ( 1 )

Cannot be shipped Internationally if shipped by air

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Pro LS 4340 Rotating Assembly, 346 Cid., 3.898 bore, 3.622 stroke, 58x, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings, H Bearings

Part Number: SUM-R58368983

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 24X, 6.098 rod, 7cc dish, 9.8:1 @ 61cc, 9.4:1 @ 65cc, File-Fit ring, H Bearings

Part Number: SUM-R24368107

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Estimated Ship Date: Monday 4/27/2026 if shipped by air