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

SKU: BBPG_444237506760
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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.

Eagle 4340 Forged Crankshaft for Mopar RB and 426 Hemi

For Mopar enthusiasts looking to build a legendary engine, the Eagle 4340 forged crankshaft is the ultimate choice. Engineered to fit Mopar RB-Series engines and the iconic 426 Hemi, this crankshaft provides the structural integrity required for high-torque applications. With a 3.750-inch stroke and an 8-bolt flange, it is built to handle the immense power potential of big-block Mopar platforms.

Technical Specifications:

  • Stroke: 3.750 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Compatibility: 2-Piece Rear Main Seal
  • Application: Mopar RB-Series / 426 Hemi
  • Flange: 8-Bolt Flange
  • Durability: High-strength forging for extreme performance

This crankshaft is manufactured with precision to ensure it meets the demanding requirements of high-performance engine builders. The 4340 forged steel construction offers superior resistance to cracking and bending, even when subjected to the extreme stresses of racing. The 8-bolt flange provides a secure mounting point for your flywheel or flexplate, ensuring reliable power transfer. Whether you are restoring a classic muscle car or building a modern-day monster, this crankshaft provides the durability and performance needed to push your Mopar to the limit. Find the best parts for your Mopar build 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.

Eagle 4340 Forged Crankshaft for Mopar RB and 426 Hemi

For Mopar enthusiasts looking to build a legendary engine, the Eagle 4340 forged crankshaft is the ultimate choice. Engineered to fit Mopar RB-Series engines and the iconic 426 Hemi, this crankshaft provides the structural integrity required for high-torque applications. With a 3.750-inch stroke and an 8-bolt flange, it is built to handle the immense power potential of big-block Mopar platforms.

Technical Specifications:

  • Stroke: 3.750 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Compatibility: 2-Piece Rear Main Seal
  • Application: Mopar RB-Series / 426 Hemi
  • Flange: 8-Bolt Flange
  • Durability: High-strength forging for extreme performance

This crankshaft is manufactured with precision to ensure it meets the demanding requirements of high-performance engine builders. The 4340 forged steel construction offers superior resistance to cracking and bending, even when subjected to the extreme stresses of racing. The 8-bolt flange provides a secure mounting point for your flywheel or flexplate, ensuring reliable power transfer. Whether you are restoring a classic muscle car or building a modern-day monster, this crankshaft provides the durability and performance needed to push your Mopar to the limit. Find the best parts for your Mopar build 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.

Eagle 4340 Forged Crankshaft for Mopar RB and 426 Hemi

For Mopar enthusiasts looking to build a legendary engine, the Eagle 4340 forged crankshaft is the ultimate choice. Engineered to fit Mopar RB-Series engines and the iconic 426 Hemi, this crankshaft provides the structural integrity required for high-torque applications. With a 3.750-inch stroke and an 8-bolt flange, it is built to handle the immense power potential of big-block Mopar platforms.

Technical Specifications:

  • Stroke: 3.750 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Compatibility: 2-Piece Rear Main Seal
  • Application: Mopar RB-Series / 426 Hemi
  • Flange: 8-Bolt Flange
  • Durability: High-strength forging for extreme performance

This crankshaft is manufactured with precision to ensure it meets the demanding requirements of high-performance engine builders. The 4340 forged steel construction offers superior resistance to cracking and bending, even when subjected to the extreme stresses of racing. The 8-bolt flange provides a secure mounting point for your flywheel or flexplate, ensuring reliable power transfer. Whether you are restoring a classic muscle car or building a modern-day monster, this crankshaft provides the durability and performance needed to push your Mopar to the limit. Find the best parts for your Mopar build at GGCRACING.

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