Specifications
- Brand
- Supertech
- Part #
- CR-MINB48-H148.3-6

Supertech BMW B58 Forged 4340 H-Beam C-C Length 148.3mm Connecting Rod - Set of 6
$1534.63
Supertech BMW B58 Forged 4340 H-Beam Connecting Rod Set of 6. 148.3mm C-C length.
Key Features
- Set includes six (6) Supertech forged connecting rods.
- Constructed from strong 4340 chromoly steel for enhanced durability.
- H-beam design offers a robust and efficient cross-section.
- Center-to-center length is 148.3mm, specific for B58 engine applications.
- Forged construction provides superior strength and fatigue resistance over cast rods.
Product Details
This is a set of six Supertech forged connecting rods for your BMW B58 engine. These rods are built with 4340 chromoly steel, a strong material known for its durability under high stress. The H-beam design offers a good balance of strength and weight, making it a popular choice for performance builds. Each rod measures 148.3mm from center to center, which is a specific length designed to work with the B58 engine's crankshaft and piston combination.
When you're pushing your B58 engine beyond stock power levels, the factory connecting rods can become a weak point. These Supertech rods are forged, meaning they start as a solid piece of steel that is heated and hammered into shape. This process creates a denser, stronger grain structure compared to cast components, allowing them to handle significantly more power and stress. The 4340 chromoly steel further enhances this strength and resistance to fatigue. The H-beam cross-section is a proven design that efficiently distributes stress across the rod, ensuring reliability during demanding operation.
This set includes all six connecting rods needed to rebuild or upgrade your BMW B58 engine. It's important to ensure all components are properly balanced and installed according to manufacturer specifications for optimal performance and longevity. If you're planning a significant power increase or rebuilding your engine with performance in mind, these connecting rods are a solid foundation.
Specifications
- Brand
- Supertech
- Manufacturer Part #
- CR-MINB48-H148.3-6
Frequently Asked Questions
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Supertech BMW B58 Forged 4340 H-Beam C-C Length 148.3mm Connecting Rod - Set of 6
