Engine Kits & Rotating Assemblies

Pro LS 4340 Rotating Assembly, 377 Cid., 4.075 bore, 3.622 stroke, 24X, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R2436L0752

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Pro LS 4340 Rotating Assembly, 378 Cid., 4.080 bore, 3.622 stroke, 24X, 6.125 rod, 12cc dish, 9.9:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R2436L08012

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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

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Heavy Duty In-Frame Kit

Part Number: CLE-4595547STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595513STD

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Estimated Ship Date: Feb 3, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595514STD

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Estimated Ship Date: Feb 3, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4565055STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4805032STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4565049STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595518STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4805027STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4685100STD

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Estimated Ship Date: Jan 19, 2026 if ordered today

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S&S Cycle 2017 M8 Models 128in Oil Cooled Power Pack w/ Chrome Pushrod Tubes w/o Highlight

Part Number: SSY-310-1105B

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Estimated Ship Date: Jan 12, 2026 if ordered today

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S&S Cycle 2017 M8 Models 128in CI Oil Cooled w/ Chrome Pushrod Tubes & Highlighted Fins

Part Number: SSY-310-1106A

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Estimated Ship Date: Jan 12, 2026 if ordered today

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S&S Cycle 2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Cam Chain Tensioners - Blk w/ Highlight

Part Number: SSY-310-1225

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Estimated Ship Date: Jan 12, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595442STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-45955251STD

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HD IN-FRAME KIT

Part Number: CLE-4595525STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4595526STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4685133STD

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Estimated Ship Date: Feb 2, 2026 if ordered today

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

Part Number: ESP-334536236100

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Estimated Ship Date: Jan 29, 2026 if ordered today

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

Part Number: ESP-334540016100

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Estimated Ship Date: Jan 29, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4685150STD

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Estimated Ship Date: Feb 3, 2026 if ordered today

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HD IN-FRAME KIT, STD

Part Number: CLE-4865056STD

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Estimated Ship Date: Feb 3, 2026 if ordered today

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HD IN-FRAME KIT

Part Number: CLE-4895016STD

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Estimated Ship Date: Feb 3, 2026 if ordered today

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