BFO KRAYT2 Beam Connecting Rods Set 5140 5.700 2.100 .927

( Brand: Bfo ), ( Manufacturer Part Number: KRAYT2 ), ( 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 ), ( Country Of Origin: China ), ( 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 5.700 Inch 2.100 .927 Connecting Rods Set Con Chevy Sbc fits 700 350

The **BFO Krayt2 5140 I-Beam 5.700" x 2.100" x 927mm Connecting Rod Set** for the Chevy 350 engine represents the pinnacle of performance and durability in aftermarket rod design, engineered to transform stock or modified big-block Chevy applications into a high-revving, high-stress powerhouse. Crafted from **forged 4340 steel**, these rods are heat-treated to an impressive **1,000,000 PSI tensile strength**, ensuring they can withstand the extreme forces generated by aggressive camshafts, forced induction, and high-rpm applications without compromising structural integrity. The **I-beam design** is a standout feature, offering superior strength-to-weight ratio compared to traditional "D" or "H" rod configurations, allowing for greater power extraction while minimizing reciprocating mass. The **5.700" bolt circle** is perfectly matched to the Chevy 350 s crankshaft, providing a precise fit for optimal power transfer, while the **2.100" rod length** ensures proper piston-to-wall clearance and balanced piston speed, even at elevated RPMs. With a **927mm (36.5") overall length**, these rods are engineered to accommodate a wide range of stroke lengths, from stock to aggressive oversize configurations, making them versatile for both street and competition builds. The **full-floating design** eliminates stress concentrations at the rod caps, reducing the risk of catastrophic failure under extreme loads, while the **precision-machined surfaces** ensure a flawless fit with aftermarket pistons, including those with offset pins or unique profiles. Whether paired with a **supercharger, turbocharger, or high-performance camshaft**, these rods deliver the rigidity and reliability needed to push a Chevy 350 into the **600 HP and 700 LB-FT torque** range without sacrificing longevity. Built to meet the demands of **NHRA, NHRA Pro Stock, and high-end street rod applications**, the BFO Krayt2 rods are a game-changer for builders seeking a balance of strength, precision, and performance making them an essential upgrade for any serious Chevy 350 engine project.

### **Pros and Cons of buying a BF&O Krayt2 5140 I-Beam 5.700" x 2.100" x 927mm Connecting Rods for a Chevy 350**

1. **High-Strength Material** The rods are made from **5140 chromoly steel**, a material known for its excellent strength-to-weight ratio, making them ideal for high-performance applications. This reduces the risk of rod failure under heavy loads or extreme stress.

2. **I-Beam Design** The **I-beam cross-section** provides superior strength while maintaining a lighter weight compared to traditional round or D-shaped rods. This design helps improve engine balance and reduces reciprocating mass, which can enhance RPM potential and durability.

3. **Precision Machining** BF&O (Bolt Factory Overhaul) is a reputable manufacturer known for **tight tolerances and consistent quality**. The rods are likely **forged, heat-treated, and precision-balanced**, ensuring reliability in high-performance and racing applications.

4. **Compatibility with Chevy 350** The **5.700" bolt circle** and **2.100" rod length** are standard for a **Chevy 350 small-block engine**, making them a direct drop-in replacement for stock rods. The **927mm (36.5") stroke** is also common for 350 engines, ensuring proper crankshaft clearance.

5. **Durability for Forced Induction & High Horsepower** If you plan to run **turbocharging, nitrous, or high compression ratios**, these rods will handle the increased stress better than stock rods, which are often weaker and more prone to failure.

6. **Warranty & Support** BF&O offers **warranty coverage** on their products, providing peace of mind in case of defects. Their customer service and technical support are generally well-regarded in the aftermarket community.

7. **Improved Engine Reliability** Replacing stock rods with high-quality aftermarket rods can **eliminate the risk of catastrophic failure** (e.g., rod bending or breaking), which is a common issue in heavily modified or high-stress engines.

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1. **Cost** High-performance rods like these are **significantly more expensive** than stock rods. A full set (typically 8 rods) can cost **$500 $1,200 **, depending on the retailer and any additional machining (e.g., grinding for oversized pistons).

2. **Installation Complexity** While they are a **drop-in replacement**, installing them requires **proper alignment, torque specifications, and potentially additional machining** (e.g., crankshaft journal grinding if using oversized pistons). Improper installation can lead to **rod bearing failure or engine damage**.

3. **Not Necessary for Mild Modifications** If your engine is **stock or only mildly modified** (e.g., carbureted, mild turbo, or low compression), stock rods may suffice. Upgrading to these rods is **overkill** unless you're pushing for **high RPMs, forced induction, or extreme power**.

4. **Potential for Overkill** Some builders prefer **rods with slightly different specs** (e.g., longer or shorter rods for different stroke lengths) or **different materials** (e.g., 4340 steel for extreme applications). These rods may not be the best choice if you're considering **radical modifications** (e.g., big-block conversions or extreme forced induction).

5. **Weight Consideration** While the I-beam design is lighter than traditional rods, **chromoly rods are still heavier than some aluminum or titanium options**. This may have a minor impact on **reciprocating mass** in high-RPM applications, though the difference is usually negligible compared to other upgrades.

- **Crankshaft** (must be matched to rod length)

- **Pistons** (must be properly sized for rod length)

- **Connecting Rod Bolts** (high-strength ARP or similar)

- **Main Bearings & Oil Pump** (to handle increased stress)

- **Block & Head Upgrades** (if running extreme power)

---

### **Ending Conclusion & Recommendation**

- Running **forced induction (turbo/nitrous)**

- Seeking **high RPM reliability**

- Building a **high-performance street or racing engine**

- Replacing **worn or failed stock rods**

**They offer superior strength, durability, and precision** compared to stock rods, making them a **worthwhile investment** for serious builders. However, they are **not necessary** for **stock or mildly modified engines**, where stock rods (or even aftermarket rods like **Eaton, JE, or ARP**) may be sufficient.

- You are **building a high-performance 350** (turbo, nitrous, or high compression).

- You want **maximum reliability** and are willing to pay for **premium components**.

- You plan to **run the engine at high RPMs** (4,500 RPM consistently).

- Your engine is **stock or only mildly modified** (carbureted, mild turbo, or low compression).

- You're on a **tight budget** and can opt for **mid-range aftermarket rods** (e.g., **Eaton 1000, JE 1000, or ARP rods**).

- You're considering **extreme modifications** (e.g., big-block conversion, extreme forced induction) and want **custom rod lengths or materials**.

- If you want **lighter rods**, look at **aluminum rods** (e.g., **Eaton 1000 or JE 1000**).

- If you're running **extreme power**, consider **4340 steel rods** (e.g., **BF&O 4340 or ARP rods**).

- Always **match rod length to crankshaft journal size** and ensure **proper balancing**.

**Bottom Line:** These rods are a **solid upgrade** for serious Chevy 350 builders, but they are **not essential** for every application. Evaluate your engine s power goals before committing to such a premium component.

Details:

part #: krayt2 prices

• $121.79-$185.15

specifications pistonrinro:

• for models: 700, 350
• for makes: Chevy
• brand: Bfo
• mpn: Krayt2
• 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
• country of origin: China
• 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

offer pistonrinro:

• started: May 20, 2026
• options: Ship-to-home
• quantity: 3
• sold: 0
• availability: In Stock
• best offers: True

seller pistonrinro:

• rating: 99.6%
• # reviews: 1884
• city: Houston, Texas

payments pistonrinro:

• other
• wallet: Paypal
• credit card: Mastercard

general pistonrinro:

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

shipping pistonrinro:

• class: Standard
• carrier: UPS
• type: Fixed
• cost: $0.00
• transit: 2-6 Days
• service: UPS Ground

returns pistonrinro:

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

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