Eagle 4340 Forged Crankshaft 4.250 Stroke — Fits Mopar RB-Series & 426 Hemi

SKU: BBPG_444242507100
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Sale price$1,140.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eagle

Eagle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eagle lineup with fast shipping and expert fitment support — order with confidence.

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High-Performance Eagle 4340 Forged Crankshaft

Unlock the true potential of your Mopar RB-Series or 426 Hemi engine with the Eagle 4340 Forged Crankshaft. Engineered for builders who demand reliability under extreme pressure, this 4.250-inch stroke crankshaft provides the structural integrity required for high-horsepower street and strip applications. Crafted from premium 4340 forged steel, this unit is designed to handle the rigors of high-RPM operation while maintaining precise balance.

Key Technical Specifications

  • Stroke: 4.250 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Style: 2-Piece Rear Main Seal
  • Flange: 8-Bolt Flange
  • Application: Mopar RB-Series / 426 Hemi

The forging process ensures superior grain flow and fatigue resistance compared to cast alternatives, making it an essential upgrade for any serious engine build. Whether you are chasing podium finishes or building a street-legal beast, this crankshaft delivers the consistency you need. Its internal balance design simplifies the rotating assembly process, saving you time and money at the machine shop. Trust your engine build to the industry-leading quality of Eagle components. Experience the difference in power and longevity by choosing parts from GGCRACING for your next engine overhaul.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eagle

Eagle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eagle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

High-Performance Eagle 4340 Forged Crankshaft

Unlock the true potential of your Mopar RB-Series or 426 Hemi engine with the Eagle 4340 Forged Crankshaft. Engineered for builders who demand reliability under extreme pressure, this 4.250-inch stroke crankshaft provides the structural integrity required for high-horsepower street and strip applications. Crafted from premium 4340 forged steel, this unit is designed to handle the rigors of high-RPM operation while maintaining precise balance.

Key Technical Specifications

  • Stroke: 4.250 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Style: 2-Piece Rear Main Seal
  • Flange: 8-Bolt Flange
  • Application: Mopar RB-Series / 426 Hemi

The forging process ensures superior grain flow and fatigue resistance compared to cast alternatives, making it an essential upgrade for any serious engine build. Whether you are chasing podium finishes or building a street-legal beast, this crankshaft delivers the consistency you need. Its internal balance design simplifies the rotating assembly process, saving you time and money at the machine shop. Trust your engine build to the industry-leading quality of Eagle components. Experience the difference in power and longevity by choosing parts from GGCRACING for your next engine overhaul.

Product Details

Product Description

About Eagle

Eagle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eagle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

High-Performance Eagle 4340 Forged Crankshaft

Unlock the true potential of your Mopar RB-Series or 426 Hemi engine with the Eagle 4340 Forged Crankshaft. Engineered for builders who demand reliability under extreme pressure, this 4.250-inch stroke crankshaft provides the structural integrity required for high-horsepower street and strip applications. Crafted from premium 4340 forged steel, this unit is designed to handle the rigors of high-RPM operation while maintaining precise balance.

Key Technical Specifications

  • Stroke: 4.250 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Style: 2-Piece Rear Main Seal
  • Flange: 8-Bolt Flange
  • Application: Mopar RB-Series / 426 Hemi

The forging process ensures superior grain flow and fatigue resistance compared to cast alternatives, making it an essential upgrade for any serious engine build. Whether you are chasing podium finishes or building a street-legal beast, this crankshaft delivers the consistency you need. Its internal balance design simplifies the rotating assembly process, saving you time and money at the machine shop. Trust your engine build to the industry-leading quality of Eagle components. Experience the difference in power and longevity by choosing parts from GGCRACING for your next engine overhaul.

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