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Eagle Standard Forged 4340 Steel Center-Counterweighted Crankshaft - 428135435933

$1,158.99

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Eagle Standard Forged 4340 Steel Center-Counterweighted Crankshaft - 428135435933

$1,158.99

$1,158.99

The Eagle Standard Forged 4340 Chromoly Steel Crankshaft (MPN: 428135435933) is engineered for the most demanding high-RPM and high-power engine builds. Featuring a non-twist forging process, this crankshaft utilizes center counterweights to provide exceptional rotating assembly stability and vibration control under extreme stress.

Each crankshaft is manufactured with 0.125-inch fillet radii for superior structural integrity and fatigue resistance. Note that due to this high-strength design, the use of chamfered or narrowed engine bearings is required. The journals are micropolished to a mirror finish and the entire surface is nitrided to ensure maximum surface hardness and wear resistance.

  • Material: 4340 Chromoly Steel
  • Manufacturing: Non-twist forged for grain flow consistency
  • Surface Treatment: Nitrided finish with micropolished journals
  • Fillet Radius: 0.125" (requires narrowed/chamfered bearings)
  • Design: Center-counterweighted for high-RPM stability
  • Manufacturer Part Number: 428135435933

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