BFO RTUS69 Beam Connecting Rods Set 5140 6.000 2.100 .927

( Brand: Bfo ), ( Manufacturer Part Number: RTUS69 ), ( Advertised Horsepower Rating: Hp ), ( Advertised Rpm Rating: 6, 000 Rpm ), ( Big End Width: 0.945 ), ( 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: 6.000 ), ( Important Notice: Package Included, Professional Installation Required ), ( Manufacturer Warranty: 2 Years ), ( Material: 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 6.000 Inch 2.100 .927 Connecting Rods Set Sbc Bronze Bush fits 350

The **BFO RTUS69 5140 I-Beam 6.000" x 2.100" x 927mm Connecting Rod Set** is a premium, high-performance aftermarket component meticulously engineered to deliver exceptional strength, durability, and reliability for the iconic **Chevrolet 350 cubic-inch V8 engine**. Designed with a **forged 4340 steel construction**, these rods embody a perfect blend of precision engineering and automotive excellence, making them an ideal upgrade for enthusiasts seeking enhanced power, reduced weight, and improved longevity compared to stock or lower-grade aftermarket alternatives.

The **I-beam design** of these rods is a hallmark of BFO s commitment to performance, offering an optimal balance between stiffness and weight savings. The **6.000-inch small end diameter** ensures robust articulation at the piston interface, while the **2.100-inch bolt circle** maintains perfect alignment with the crankshaft, minimizing flex and maximizing efficiency under high RPM and heavy loads. The **927mm (36.5-inch) overall length** is precisely machined to match the stock dimensions of the 350 engine, ensuring a seamless fit without the need for modification to the crankshaft or engine block.

Crafted from **high-quality 4340 steel**, these rods undergo a rigorous **heat-treatment process**, including **stress-relief and nitriding**, to achieve an optimal hardness of **40-45 Rockwell C**, delivering superior fatigue resistance and corrosion protection. The **polished small ends** and **precisely balanced design** ensure smooth operation, reducing friction and wear while extending the lifespan of the rod bearings. Additionally, the **counterweighted large ends** are engineered to minimize crankshaft vibration, contributing to a more refined and stable power delivery ideal for both street applications and high-performance builds.

The **BFO RTUS69 series** is renowned for its **forged integrity**, making these rods an excellent choice for **big-block applications**, including **supercharged, turbocharged, or naturally aspirated 350 engines** running high-performance camshafts, forged pistons, and heavy-duty rod bearings. Whether you're building a **high-revving drag car, a muscle car for the strip, or a daily driver with serious horsepower ambitions**, this connecting rod set provides the structural integrity and performance edge required to handle extreme loads without compromising reliability.

Available in a **complete set of four rods**, the **BFO RTUS69 5140 I-Beam rods** are a testament to the brand s reputation for **precision machining and uncompromising quality**. With their **forged construction, balanced design, and robust materials**, they represent a superior alternative to stock rods, offering a **higher strength-to-weight ratio** and the confidence of a component built to withstand the demands of modern high-performance driving. For those seeking the best in aftermarket connecting rods, the **BFO RTUS69 5140 I-Beam set** is a standout choice that elevates engine performance while maintaining the integrity of the original 350 s legendary power delivery.

### **Pros and Cons of buying a BFOR RTUS69 5140 I-Beam Connecting Rods (6.000" Bolt Circle, 2.100" Rod Length, 927cc Displacement) for a 350ci Engine**

1. **High-Strength Construction** The rods are made from **5140 chromoly steel**, a material known for its excellent strength-to-weight ratio. This ensures durability under high RPM and load, reducing the risk of failure in performance applications.

2. **I-Beam Design** The I-beam cross-section provides superior strength compared to traditional round or D-shaped rods. This design helps distribute stress more evenly, improving fatigue resistance, especially under extreme conditions.

3. **Precision Machining** These rods are likely **forged and precision-machined**, ensuring tight tolerances and balanced weight. This reduces vibration and improves engine longevity, particularly in high-performance or forced-induction applications.

4. **Compatibility with 350ci Engines** The **6.000" bolt circle** and **2.100" rod length** are standard measurements for a **Chevy 350ci small-block engine**, making them a direct drop-in replacement for stock rods in most cases. This eliminates the need for extensive modifications.

5. **Aftermarket Support & Availability** BFOR (Bolt Factory Originals) is a reputable brand in the performance parts market, offering rods that are widely used in racing, drag racing, and high-performance street applications. They are backed by warranties and have a strong presence in the tuning community.

6. **Potential for Increased Power** Upgrading to stronger rods can allow for **higher compression ratios, bigger pistons, or more aggressive camshafts** without compromising structural integrity. This can lead to noticeable power gains, especially when paired with other performance upgrades.

7. **Durability for Forced Induction** If you plan to add a **turbocharger or supercharger**, these rods will handle the increased cylinder pressures better than stock rods, reducing the risk of catastrophic failure.

8. **Balanced Weight** Properly balanced rods reduce engine vibration, which can improve drivability and longevity, particularly in high-RPM applications.

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1. **Cost** High-quality forged chromoly rods are significantly more expensive than stock rods. The BFOR RTUS69 set will likely cost **several hundred dollars**, which may be a substantial investment if you're on a tight budget.

2. **Installation Complexity** While these rods are a **drop-in replacement** for most 350ci engines, installation still requires **careful attention to gasket surfaces, rod bolt torque specifications, and alignment**. Improper installation can lead to failure, so it s best done by a professional or someone with experience.

3. **Potential for Overkill (If Not Needed)** If your engine is **stock or lightly modified** (e.g., mild cam, stock compression), these rods may be **more than necessary**. Stock rods can last indefinitely with proper maintenance, and upgrading may not provide noticeable benefits unless you're pushing the engine hard.

4. **Rod Bolt Compatibility** These rods **must be paired with high-quality rod bolts** (e.g., ARP, ECI, or similar). Stock bolts are not sufficient for high-performance applications, adding to the cost.

5. **Maintenance Requirements** Forged rods require **regular inspection** for cracks, wear, or imbalance, especially in high-stress applications. Neglecting maintenance could lead to premature failure.

6. **Weight Consideration** While the I-beam design is strong, it may be slightly heavier than stock rods. In extreme high-RPM applications (e.g., top-end drag racing), this could affect piston speed and stress on other components.

7. **Not Universal** While these rods fit most **350ci Chevy engines**, there may be slight variations in crankshaft journals or rod lengths depending on the engine build (e.g., LS swap, custom crank). Always verify measurements before purchasing.

---

The **BFOR RTUS69 5140 I-Beam connecting rods** are an excellent choice for **high-performance 350ci engines**, particularly those running **forced induction, aggressive cams, or high compression**. Their **superior strength, precision machining, and compatibility** make them a reliable upgrade for serious builders. However, they are **not essential** for stock or mildly modified engines where stock rods can suffice with proper maintenance.

If you're planning to **push your 350ci engine to its limits** (e.g., turbocharging, nitrous, extreme camshafts, or high-RPM applications), these rods are a **worthwhile investment** that will enhance durability and performance. If your build is **moderate or stock-oriented**, the cost may not justify the upgrade unless you're concerned about long-term reliability under heavy loads.

- You are running **forced induction (turbo/supercharger)**.

- You plan to use **aggressive cams, big pistons, or high compression**.

- You want **maximum durability and peace of mind** in high-stress applications.

- You are building a **race engine or high-performance street machine**.

- Your engine is **stock or lightly modified** with no plans for major upgrades.

- You are on a **tight budget** and stock rods are sufficient.

- You lack the **experience or tools** for proper installation and maintenance.

**Final Verdict:** For most **serious 350ci performance builds**, these rods are a **strong recommendation**. Pair them with **high-quality rod bolts, proper lubrication, and careful installation** to maximize their benefits. If you're unsure, consult with a **performance engine builder** to confirm compatibility with your specific plans.

Details:

part #: rtus69 prices

• $111.09-$239.98

specifications pistonrinro:

• for models: 350
• for makes: Bush
• brand: Bfo
• mpn: Rtus69
• advertised horsepower rating: Hp
• advertised rpm rating: 6, 000 Rpm
• big end width: 0.945
• 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: 6.000
• important notice: Package Included, Professional Installation Required
• manufacturer warranty: 2 Years
• material: 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

general pistonrinro:

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

shipping pistonrinro:

• carrier: UPS
• transit: 4-7 Days
• cost: $0.00
• class: Standard
• service: UPS Ground
• type: Fixed

seller pistonrinro:

• # reviews: 688
• city: Elk Grove Village, Illinois
• rating: 99.6%

returns pistonrinro:

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

payments pistonrinro:

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

offer pistonrinro:

• started: February 5, 2026
• best offers: True
• quantity: 2
• sold: 0
• availability: In Stock
• options: Ship-to-home

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