Eagle Forged Stroker Crankshaft

Fits Most Models with Chrysler Modern HEMI Engines

439240506125

Overview:

The Eagle Forged Stroker Crankshaft is engineered for high-performance applications requiring exceptional strength and durability. Crafted from premium 4340 forged steel, this crankshaft is designed to withstand the rigors of demanding engine builds, making it an ideal choice for enthusiasts and professional builders alike. Featuring a 4.050" stroke and 2.000" rod journals, it is tailored for Chrysler Modern HEMI engines, delivering enhanced stroke length for increased displacement and torque potential.

This crankshaft includes a 32-tooth reluctor, compatible with modern ignition systems, and requires chamfered or narrowed bearings due to its .125" fillet radiuses. It is supplied unbalanced to allow precise matching with your specific rods and pistons, ensuring optimal engine balance and performance.

Key Features:

Designed with advanced forging and finishing techniques, the Eagle Forged Stroker Crankshaft offers a combination of strength, reliability, and precision engineering:

• Constructed from high-grade 4340 forged steel for superior toughness
• Non-twist forging process enhances structural integrity under high loads
• .125" fillet radiuses improve fatigue resistance, requiring chamfered or narrowed bearings
• Nitrided surface treatment for increased wear resistance and longevity
• Micropolished finish reduces friction and improves oil flow
• Includes a 32-tooth reluctor wheel compatible with Chrysler Modern HEMI ignition systems
• 4.050" stroke length for increased engine displacement and torque output
• 2.000" rod journals optimized for strength and compatibility with performance rods
• Unbalanced to allow custom balancing with your specific rods and pistons

Construction & Design:

The crankshaft is forged from premium 4340 steel, known for its excellent strength-to-weight ratio and fatigue resistance. The non-twist forging process ensures the crank maintains its shape and strength under extreme stress, critical for high-performance and racing applications. The .125" fillet radiuses reduce stress concentrations at the journal fillets, enhancing durability but necessitating the use of chamfered or narrowed bearings to ensure proper fitment.

Surface treatments such as nitriding and micropolishing further enhance the crankshaft’s wear resistance and reduce friction, contributing to longer service life and improved engine efficiency. The inclusion of a 32-tooth reluctor integrates seamlessly with modern ignition systems, ensuring precise timing and reliable operation.

Installation & Fitment:

This crankshaft is designed to fit most Chrysler Modern HEMI engines and is ideal for stroker builds requiring a 4.050" stroke. Because of the specialized fillet radius, installation requires chamfered or narrowed bearings to prevent interference and ensure proper oil clearance. Additionally, the crankshaft is shipped unbalanced, so professional balancing with your specific rods and pistons is necessary to achieve optimal engine smoothness and longevity.

Proper installation by a qualified engine builder is recommended to maximize performance and reliability. The included 32-tooth reluctor is compatible with factory and aftermarket ignition systems designed for Chrysler Modern HEMI engines.

What's Included:

• One Eagle forged 4340 steel stroker crankshaft
• 32-tooth reluctor wheel installed

Ideal For:

This crankshaft is perfect for engine builders and performance enthusiasts looking to increase displacement and torque in Chrysler Modern HEMI engines. It is well-suited for high-performance street builds, drag racing, road racing, and other demanding motorsport applications where strength and reliability are paramount.

Eagle Specialty Products manufactures high-strength engine components—most notably connecting rods and crankshafts—intended for performance and racing engines. These rotating-assembly upgrades are commonly used in builds that demand higher strength margins for boost, nitrous, sustained RPM, or competition use.