Eagle SIR 5140 Forged I-Beam Connecting Rods 6.125in — Fits Small Block Chevy

SKU: BBPG_SIR6125BBLW
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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.

High-Performance Eagle I-Beam Connecting Rods

Engineered for reliability and strength, these Eagle SIR series 5140 forged steel I-beam connecting rods are the perfect upgrade for your Small Block Chevy engine build. Designed to handle increased stress while maintaining a lightweight profile, these rods provide the durability required for street performance and mild racing applications.

Technical Specifications

  • Material: 5140 Forged Steel
  • Length: 6.125 inches
  • Design: I-Beam
  • Bolts: 3/8 inch 8740 Cap Screws
  • Bushed: Yes
  • Quantity: Set of 8

The I-beam geometry offers an excellent strength-to-weight ratio, reducing reciprocating mass to help your engine rev faster and more efficiently. Each rod is precision-machined to ensure consistent tolerances, providing peace of mind during high-RPM operation. Whether you are refreshing a classic engine or building a custom street machine, these rods offer the perfect balance of performance and value. Trust GGCRACING to provide the high-quality components your engine deserves.

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.

High-Performance Eagle I-Beam Connecting Rods

Engineered for reliability and strength, these Eagle SIR series 5140 forged steel I-beam connecting rods are the perfect upgrade for your Small Block Chevy engine build. Designed to handle increased stress while maintaining a lightweight profile, these rods provide the durability required for street performance and mild racing applications.

Technical Specifications

  • Material: 5140 Forged Steel
  • Length: 6.125 inches
  • Design: I-Beam
  • Bolts: 3/8 inch 8740 Cap Screws
  • Bushed: Yes
  • Quantity: Set of 8

The I-beam geometry offers an excellent strength-to-weight ratio, reducing reciprocating mass to help your engine rev faster and more efficiently. Each rod is precision-machined to ensure consistent tolerances, providing peace of mind during high-RPM operation. Whether you are refreshing a classic engine or building a custom street machine, these rods offer the perfect balance of performance and value. Trust GGCRACING to provide the high-quality components your engine deserves.

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.

High-Performance Eagle I-Beam Connecting Rods

Engineered for reliability and strength, these Eagle SIR series 5140 forged steel I-beam connecting rods are the perfect upgrade for your Small Block Chevy engine build. Designed to handle increased stress while maintaining a lightweight profile, these rods provide the durability required for street performance and mild racing applications.

Technical Specifications

  • Material: 5140 Forged Steel
  • Length: 6.125 inches
  • Design: I-Beam
  • Bolts: 3/8 inch 8740 Cap Screws
  • Bushed: Yes
  • Quantity: Set of 8

The I-beam geometry offers an excellent strength-to-weight ratio, reducing reciprocating mass to help your engine rev faster and more efficiently. Each rod is precision-machined to ensure consistent tolerances, providing peace of mind during high-RPM operation. Whether you are refreshing a classic engine or building a custom street machine, these rods offer the perfect balance of performance and value. Trust GGCRACING to provide the high-quality components your engine deserves.

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