Callies Compstar Forged 4340 Steel Crankshaft

Fits Chrysler / Dodge / Jeep / Ram 5.7L Hemi, 6.1L SRT8, 6.4L 392, 6.2L Hellcat & Trackhawk

YY12E48-CS

Overview:

The Callies Compstar Forged 4340 Steel Crankshaft is engineered for high-performance applications in a wide range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L to 6.4L Hemi engines, including the 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk models. Designed to replace the factory crankshaft, this forged steel component offers superior strength and durability, making it ideal for enthusiasts and professionals seeking reliable powertrain upgrades.

Built to withstand increased horsepower and torque demands, the Compstar crankshaft ensures long-lasting performance under extreme conditions. Whether you are building a street performance engine or a race-ready powerplant, this crankshaft provides the foundation for enhanced engine reliability and efficiency.

Key Features:

Callies Compstar crankshafts incorporate advanced engineering and premium materials to deliver exceptional performance and durability. Key features include:

• Forged from high-grade 4340 steel for maximum strength and toughness
• Internal engine balance optimized for smooth operation and reduced vibration
• Lightened design to improve engine responsiveness and reduce rotational mass
• Standard crankshaft snout style for compatibility with OEM components
• Requires narrow bearings for proper fitment and performance
• Rod journal diameter of 2.000 inches and main journal diameter of 2.559 inches
• 1-piece rear main seal style for reliable sealing and ease of installation
• Weight of approximately 52 lbs, balancing durability with manageable mass
• Sold individually, allowing for custom engine builds and replacements

Construction & Design:

This crankshaft is meticulously forged from 4340 steel, a material known for its excellent fatigue resistance and tensile strength, making it a preferred choice for high-performance engine components. The forging process enhances the grain structure of the steel, resulting in a crankshaft that can endure the rigors of high RPMs and increased cylinder pressures.

The internal balance design reduces harmonic vibrations, contributing to smoother engine operation and improved longevity of related components. Additionally, the lightened construction reduces rotational inertia, allowing the engine to rev more freely and respond quicker to throttle inputs.

Installation & Fitment:

The Callies Compstar crankshaft is designed to fit a broad range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk engines. Installation requires the use of narrow bearings, which are not included and must be sourced separately. Rod and main bearings are also sold separately, allowing builders to select bearings that best suit their application.

Installation should be performed by a qualified engine builder or technician to ensure proper clearances and alignment. The crankshaft’s 1-piece rear main seal style and standard snout ensure compatibility with OEM seals and accessories, simplifying the swap process.

What's Included:

• One forged 4340 steel crankshaft
• Mechanical and electrical failure coverage plan

Ideal For:

This crankshaft is ideal for performance enthusiasts, engine builders, and professional racers upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram Hemi engines. It is well-suited for applications requiring enhanced durability and strength, including street performance, drag racing, road racing, and off-road builds where reliability under high stress is critical.

Callies Performance is known for high-end rotating-assembly components—especially crankshafts and connecting rods—built for serious horsepower and demanding race conditions. Focused on precision manufacturing and durability, Callies supports builders who need confidence at high RPM and high cylinder pressure, whether it’s drag racing, boosted street builds, or endurance-focused powerplants.