BFO 4950KR Beam Connecting Rod Set Bushed Floating Pin 5140 5.700FTFT

( Brand: Bfo ), ( Manufacturer Part Number: 4950KR ), ( Advertised Horsepower Rating: Hp ), ( Advertised Rpm Rating: 6, 000 Rpm ), ( Big End Width: 0.940 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Connecting Rod Bolt: 3/8 ), ( Connecting Rod Bolt Head Style: 12-point ), ( Connecting Rod Bolt Material: 40crmo ), ( Connecting Rod Length: 5.700 ), ( Important Notice: Package Included, Professional Installation Required ), ( Manufacturer Warranty: 2 Years ), ( Material: Forged 5140 Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Performance Part: Yes ), ( Rod Journal Diameter: 2.100 ), ( Rod Type: I-beam ), ( Type: Connecting Rods ), ( Weight Tolerance: Balanced To / 1 Gram In Set ), ( Wrist Pin Diameter: 0.927 ), ( Wrist Pin Style: Floating Pin )

Review BFO I beam Connecting Rod Set 5.700ftft Sbc Chevy Bushed Floating Pin fits 350

The **BFO 4950KR I-Beam 5140 Connecting Rod Set** for the Chevy 350 with a **5.700-inch floating pin** and bushings represents a premium upgrade for high-performance small-block applications, blending cutting-edge engineering with the timeless reliability of a classic Chevy V8. Engineered from **5140 chromoly steel**, these rods are forged to exacting standards, delivering an optimal balance of strength, durability, and weight savings critical for maximizing horsepower and torque while maintaining structural integrity under extreme loads. The **I-beam design** enhances rigidity, reducing rod deflection and improving piston-to-wall contact, which is essential for high-revving engines or those running forced induction. Each rod is **heat-treated and stress-relieved** to ensure uniform hardness and resilience, minimizing the risk of catastrophic failure even under the most demanding conditions. The **5.700-inch floating pin** configuration, paired with precision-machined **bushed pin bores**, allows for smoother piston movement and reduced friction, contributing to improved efficiency and longevity. Whether installed in a street rod, a high-performance drag car, or a fuel-injected muscle machine, these rods are designed to handle the stresses of aggressive camshafts, high compression ratios, and aggressive tuning without compromising on performance or reliability. Built to meet or exceed factory specifications while incorporating modern forging techniques, the BFO 4950KR set is an ideal choice for builders seeking a blend of heritage engineering and contemporary performance enhancements.

### Pros and Cons of buying a BF0 4950KR I-Beam 5140 Connecting Rod Set for a Chevy 350 (Bushed Floating Pin)

1. **High-Strength Construction** The I-beam design provides superior strength and rigidity compared to traditional rod designs, reducing the risk of rod failure under high stress. The 5140 steel is known for its durability and ability to handle high torque and RPMs.

2. **Floating Pin Design** Bushings allow the piston pin to rotate freely within the rod, reducing friction and wear on both the pin and the rod itself. This design is particularly beneficial for high-performance applications where longevity and reliability are critical.

3. **Precision Machining** BF0 (Bear Friction Oilers) is a reputable manufacturer known for tight tolerances and consistent quality. The rods are likely to fit perfectly with minimal clearance issues, improving engine reliability.

4. **Compatibility with Chevy 350** The 5140 rods are designed to fit standard Chevy 350 crankshafts, making them a straightforward upgrade for stock or modified engines. The bushings ensure compatibility with floating pins, which are common in performance builds.

5. **Performance Potential** Stronger rods allow for increased horsepower and torque without the risk of catastrophic failure. This is ideal for forced-induction applications, high-revving engines, or heavy-duty towing.

6. **Warranty and Support** BF0 offers warranties on their products, providing peace of mind for high-cost components. Their reputation for customer service and technical support is generally positive.

7. **Durability for Forced Induction** If you plan to add a turbo or supercharger, these rods will better withstand the increased stress compared to stock rods, which are often the weakest link in forced-induction builds.

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1. **Cost** At 4,950 KR (approximately 650 700 USD, depending on exchange rates), these rods are significantly more expensive than stock or aftermarket rods (e.g., stock Chevy rods can cost as little as 50 150 USD per rod). This is a substantial investment, especially for a stock or mildly modified engine.

2. **Overkill for Stock or Mild Builds** If your Chevy 350 is running stock or with minimal modifications (e.g., carbureted, naturally aspirated, and low RPM use), the stock rods may suffice. Upgrading to I-beam rods may not provide noticeable benefits unless you re pushing the engine hard.

3. **Installation Complexity** Installing bushings and floating pins requires careful attention to torque specs and alignment. Improper installation can lead to premature wear or failure. This may necessitate professional installation, adding to the cost.

4. **Weight** I-beam rods are heavier than stock rods, which could slightly reduce the engine s responsiveness, especially in high-revving applications. However, the performance gains usually outweigh this minor drawback.

5. **Potential for Over-Torquing** If the engine is not properly balanced or the rods are not installed correctly, there s a risk of stress concentrations leading to failure. This is more of a concern with high-performance builds where torque and RPM are maximized.

6. **Compatibility with Other Components** Ensure that your pistons, crankshaft, and bearings are also upgraded to match the strength of these rods. Mismatched components (e.g., weak bearings or pistons) can negate the benefits of the rods.

7. **Resale Value** While high-quality rods like these add value to a performance engine, they may not significantly boost the resale value of a stock or mildly modified engine.

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The BF0 4950KR I-Beam 5140 connecting rod set is an excellent choice for **high-performance Chevy 350 applications**, particularly those involving forced induction, high torque, or aggressive modifications. The strength, durability, and floating pin design make them ideal for engines pushing beyond stock limits. However, for **stock or mildly modified engines**, the cost may not justify the upgrade, and stock rods or more affordable aftermarket options could suffice.

If you re planning to **build a high-RPM, high-horsepower engine (e.g., turbocharged, supercharged, or nitrous-assisted)**, these rods are a wise investment. For **daily drivers or stock engines**, prioritize other upgrades (e.g., headers, camshafts, or fuel system improvements) before committing to premium rods.

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- **Buy if:** You are building a **high-performance Chevy 350** (e.g., turbocharged, supercharged, or nitrous-assisted) and want the strongest possible rods to handle increased stress. The floating pin design also reduces wear in high-RPM applications.

- **Skip if:** Your engine is **stock or mildly modified** (e.g., carbureted, naturally aspirated, and low-torque use). In this case, focus on other performance upgrades first.

- **Consider alternatives if:** You want a more budget-friendly option but still need stronger rods. Brands like **Crane, Scat, or ARP** offer high-quality rods at lower prices, though they may not have the exact same I-beam design.

- **Pair with:** A **balanced crankshaft, high-quality bearings, and properly matched pistons** to ensure the entire rod assembly operates optimally. Consult with a performance engine builder to confirm compatibility with your specific build.

Ultimately, these rods are a **premium upgrade** best suited for serious performance applications. For everything else, weigh the cost against your engine s actual needs.

Details:

Factory Warranty. These rods are x-rated ultrasonically tested with all surfaces shot preened stress relieved. Application: For Chevy SBC 350 1967-2003. Suspension Masters US.

Guaranteed Fitment Always the correct part. Specification: Connecting Rod length : 5.700. Best Costumer Service. Rod Type: I-Beam.

Package included. Wrist Pin Diameter: 0.927. Precision machined honed journal pin ends. Wrist Pin Style: Floating.

All messages. Rod Journal Diameter: 2.100.

part #: 4950kr prices

• $110.99-$128.89

specifications pistonrinro:

• for models: 350
• for makes: Chevy
• brand: Bfo
• mpn: 4950kr
• advertised horsepower rating: Hp
• advertised rpm rating: 6, 000 Rpm
• big end width: 0.940
• california prop 65 warning: California Prop 65 Warning
• connecting rod bolt: 3/8
• connecting rod bolt head style: 12-point
• connecting rod bolt material: 40crmo
• connecting rod length: 5.700
• important notice: Package Included, Professional Installation Required
• manufacturer warranty: 2 Years
• material: Forged 5140 Steel
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part.
• performance part: Yes
• rod journal diameter: 2.100
• rod type: I-beam
• type: Connecting Rods
• weight tolerance: Balanced To / 1 Gram In Set
• wrist pin diameter: 0.927
• wrist pin style: Floating Pin

shipping pistonrinro:

• class: Standard
• cost: $0.00
• transit: 3-5 Days
• carrier: UPS
• service: UPS Ground
• type: Fixed

seller pistonrinro:

• city: Rowland height, California
• # reviews: 14967
• rating: 99.5%

payments pistonrinro:

• credit card: Diners-club
• wallet: Apple-pay
• other

general pistonrinro:

• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
• condition: New

offer pistonrinro:

• started: April 12, 2026
• availability: In Stock
• sold: 0
• best offers: True
• options: Ship-to-home

returns pistonrinro:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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