Eagle 4340 Forged Crankshaft 3.750 Stroke — Fits Mopar RB-Series / 426 Hemi

SKU: BBPG_444037506760
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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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Eagle 4340 Forged Crankshaft for Mopar RB & 426 Hemi

Unlock the true potential of your Mopar RB-Series or 426 Hemi engine with the Eagle 4340 Forged Crankshaft. Featuring a 3.750 inch stroke, this crankshaft is built to withstand the immense torque and power levels associated with legendary Mopar performance. Crafted from premium 4340 steel, it offers the structural rigidity required for high-performance street and drag racing applications.

Key Features

  • Stroke: 3.750 inches.
  • Material: 4340 Forged Steel.
  • Balance: Internal balance design.
  • Seal Style: 2-Piece rear main seal.
  • Flange: 6-Bolt flange for secure flywheel mounting.
  • Compatibility: Mopar RB-Series and 426 Hemi engines.

This crankshaft is designed for maximum durability, featuring a 6-bolt flange to ensure that your flywheel or flexplate stays securely attached under extreme torque loads. The internal balance design simplifies the assembly process and ensures smooth operation throughout the RPM range. Designed for the classic 2-piece rear main seal, this unit is a perfect fit for traditional Mopar engine builds. Every journal is ground and polished to exacting standards to ensure long-lasting bearing life and reliable performance. When you need a crankshaft that can handle the power of a Hemi, look no further than the selection at GGCRACING.

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

Eagle 4340 Forged Crankshaft for Mopar RB & 426 Hemi

Unlock the true potential of your Mopar RB-Series or 426 Hemi engine with the Eagle 4340 Forged Crankshaft. Featuring a 3.750 inch stroke, this crankshaft is built to withstand the immense torque and power levels associated with legendary Mopar performance. Crafted from premium 4340 steel, it offers the structural rigidity required for high-performance street and drag racing applications.

Key Features

  • Stroke: 3.750 inches.
  • Material: 4340 Forged Steel.
  • Balance: Internal balance design.
  • Seal Style: 2-Piece rear main seal.
  • Flange: 6-Bolt flange for secure flywheel mounting.
  • Compatibility: Mopar RB-Series and 426 Hemi engines.

This crankshaft is designed for maximum durability, featuring a 6-bolt flange to ensure that your flywheel or flexplate stays securely attached under extreme torque loads. The internal balance design simplifies the assembly process and ensures smooth operation throughout the RPM range. Designed for the classic 2-piece rear main seal, this unit is a perfect fit for traditional Mopar engine builds. Every journal is ground and polished to exacting standards to ensure long-lasting bearing life and reliable performance. When you need a crankshaft that can handle the power of a Hemi, look no further than the selection at GGCRACING.

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

Eagle 4340 Forged Crankshaft for Mopar RB & 426 Hemi

Unlock the true potential of your Mopar RB-Series or 426 Hemi engine with the Eagle 4340 Forged Crankshaft. Featuring a 3.750 inch stroke, this crankshaft is built to withstand the immense torque and power levels associated with legendary Mopar performance. Crafted from premium 4340 steel, it offers the structural rigidity required for high-performance street and drag racing applications.

Key Features

  • Stroke: 3.750 inches.
  • Material: 4340 Forged Steel.
  • Balance: Internal balance design.
  • Seal Style: 2-Piece rear main seal.
  • Flange: 6-Bolt flange for secure flywheel mounting.
  • Compatibility: Mopar RB-Series and 426 Hemi engines.

This crankshaft is designed for maximum durability, featuring a 6-bolt flange to ensure that your flywheel or flexplate stays securely attached under extreme torque loads. The internal balance design simplifies the assembly process and ensures smooth operation throughout the RPM range. Designed for the classic 2-piece rear main seal, this unit is a perfect fit for traditional Mopar engine builds. Every journal is ground and polished to exacting standards to ensure long-lasting bearing life and reliable performance. When you need a crankshaft that can handle the power of a Hemi, look no further than the selection at GGCRACING.

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