Engine Kits & Rotating Assemblies

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 11/17/2025

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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 11/17/2025

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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 11/17/2025

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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

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Estimated Ship Date: Monday 11/17/2025

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Pro LS Piston and Rod Kit, 332 Cid., 3.820 bore, Standard 3.622 stroke, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR368202

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.057 in. Bore, Standard Rod, Standard Main, Oldsmobile, 350, Kit

Part Number: FEM-205639M-000

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.150 in. Bore, Standard Rod, Standard Main, Pontiac, 400, Kit

Part Number: FEM-205640M-300

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.250 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 454, Kit

Part Number: FEM-205-6319M011

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.420 in. Bore, Standard Rod, Standard Main, Ford, Lincoln, Mercury, 429/460, Kit

Part Number: FEM-205-637M600

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Estimated Ship Date: Monday 11/17/2025

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Top End Engine Kit, Sidewinder Big Bore, Black Wrinkle Finish, 4 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0651

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

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Engine Re-Ring, Moly, 4.125 in. Bore, Standard Rod, Standard Main, Chevy, 400, Kit

Part Number: FEM-MK618C-000

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Estimated Ship Date: Monday 11/17/2025

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BOTTOM END KIT Polaris

Part Number: HRI-HR00114

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Engine Re-Ring, Moly, 4 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-MK6151A-000

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Estimated Ship Date: Monday 11/17/2025

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Engine Kit, Flat-Top Piston/Moly Ring, Rod, Main, Gaskets, Oil Pump, Timing Set, Chevy, 355, Kit

Part Number: SES-3483114000

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Cannot be shipped Internationally

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Engine Re-Ring, Moly, 4.125 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 400, Kit

Part Number: FEM-2056282M-011

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.360 in. Bore, .010 in. Rod, .020 in. Main, Ford, Lincoln, Mercury, 429/460, Kit

Part Number: FEM-205637M-012

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.185 in. Bore, Standard Rod, Standard Main, Chevy, 400, Kit

Part Number: FEM-205618M-600

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-2056151M-000

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Cast Iron, 4 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-MK1394A

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-2056156M-000

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 3.736 in. Bore, Standard Rod, Standard Main, Chevy, 305, Kit

Part Number: FEM-MK6027A-000

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Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-2056280M-000

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Estimated Ship Date: Monday 11/17/2025

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BOTTOM END KIT Polaris

Part Number: HRI-HR00117

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

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Engine Re-Ring, Moly, 3.736 in. Bore, Standard Rod, Standard Main, Chevy, 305, Kit

Part Number: FEM-MK6026A-000

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Engine Re-Ring, Moly, 4.080 in. Bore, Standard Rod, AMC, 360, Kit

Part Number: FEM-205715-00

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Estimated Ship Date: Monday 11/17/2025

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