MAXPEEDINGRODS B84CPI Forged Connecting Rods Skyline Silvia DR30 2.4L Arp 140MM

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: B84CPI ), ( Part Type: Rod ), ( Big End Diameter: 53mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 140mm ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quantity: Set Of 6 Pieces ), ( Small End Diameter: 21mm ), ( Surface Finish: Extra Cost For Upgrading To Arp L19 Bolts ), ( Universal Fitment: No )

Review MAXPEEDINGRODS Forged Connecting Rods Nissan Skyline Silvia 2.4l Arp 140mm fits FJ20 S12

The **MaxpeedingRods B84CPI Forged Connecting Rods** represent the pinnacle of precision engineering and performance enhancement for the legendary **Nissan FJ20 Skyline (DR30) and Silvia S12 (S13) with the 2.4L RB26DETT engine**, particularly when paired with ARP 140mm main studs. Designed to withstand the extreme stresses of aggressive tuning, these **fully forged, billet steel rods** eliminate the inherent weaknesses of cast-rod applications, delivering unmatched durability, rigidity, and power transfer efficiency. Crafted from **high-strength 4340 alloy steel**, these rods undergo a rigorous **heat-treatment process**, ensuring a uniform microstructure that resists fatigue, warping, and catastrophic failure under high RPM, boost, or forced induction. The **B84CPI** designation indicates a **1.000-inch (25.4mm) bolt circle**, perfectly matching the stock RB26 s rod spacing while incorporating **optimized wall thickness and fillet radii** to minimize stress concentrations critical for engines pushing beyond 600 horsepower or those running nitrous, turbocharging, or extreme nitrous setups. The **precision-machined rod journals** feature a **hardened and ground finish**, ensuring smooth bearing contact and extended bearing life, while the **integrated rod bolts** (included) are **pre-loaded and torque-specified** to eliminate preload loss over time, a common issue with aftermarket rod bolt kits. Whether you're chasing **street performance, track domination, or high-revving reliability**, these rods provide the structural backbone needed to push your RB26 to its limits without compromising on safety or longevity. Built to complement **ARP 140mm main studs**, they form a cohesive upgrade package that transforms your engine into a **high-stress, high-performance powerhouse**, capable of handling the demands of modern tuning while maintaining the integrity of the original engine architecture. For the serious enthusiast who demands nothing less than the best, the **MaxpeedingRods B84CPI forged rods** are the ultimate solution combining **cutting-edge materials, meticulous craftsmanship, and proven performance** to ensure your RB26 not only survives but thrives under extreme conditions.

### **Pros and Cons of Buying Maxpeedingrods B84CPI Forged Connecting Rods for the Nissan FJ20 Skyline (DR30 Silvia S12, 2.4L ARP 140mm)**

1. **Enhanced Strength and Durability** Forged connecting rods are significantly stronger than cast rods, reducing the risk of catastrophic failure under high stress, especially with forced induction or aggressive tuning. The B84CPI rods are designed to handle extreme loads, making them ideal for high-power builds.

2. **Better Weight Distribution** Forged rods are more uniform in density and structure, which can improve engine balance and reduce vibration, particularly beneficial for high-RPM applications.

3. **Compatibility with ARP 140mm Main Studs** These rods are explicitly engineered to work with ARP 140mm main studs, ensuring proper clamping force and structural integrity. This combination is a popular choice for high-power builds, as it provides a robust foundation for crankshaft and engine support.

4. **Improved Longevity** Forged rods are less prone to fatigue failure compared to cast rods, meaning they can withstand prolonged high-stress conditions without weakening over time.

5. **High-Quality Materials** Maxpeedingrods uses premium materials and precision manufacturing processes, ensuring consistent quality and reliability. The rods are heat-treated for optimal strength-to-weight ratio.

6. **Support for Aggressive Tuning** If you plan to run significant boost (e.g., 20 psi) or extreme naturally aspirated power, forged rods are a safer choice than stock or aftermarket cast rods.

7. **Warranty and Reputation** Maxpeedingrods is a well-regarded brand in the tuning community, and their rods come with a warranty, providing peace of mind for serious builders.

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1. **High Cost** Forged rods are significantly more expensive than stock or aftermarket cast rods. The B84CPI rods are not cheap, and the labor required to install them (including crankshaft balancing and rod bearing installation) adds to the expense.

2. **Installation Complexity** Replacing connecting rods requires disassembling the engine almost entirely, balancing the crankshaft, installing new bearings, and ensuring proper rod end alignment. This is a labor-intensive job best left to experienced mechanics.

3. **Potential for Overkill (If Not Needed)** If your build is modest (e.g., mild turbo or naturally aspirated with low power), forged rods may be unnecessary. Stock rods or high-quality aftermarket cast rods (e.g., JE, ARP) could suffice, saving money without sacrificing safety.

4. **Limited Aftermarket Support** While Maxpeedingrods rods are well-regarded, they are not as widely supported as some other brands (e.g., ARP, JE) in terms of bolt-on accessories or compatibility with certain tuning setups.

5. **Risk of Improper Installation** If not installed correctly (e.g., incorrect rod end spacing, improper bearing selection, or poor balancing), forged rods could still fail. This risk is mitigated by using a reputable mechanic but adds to the cost.

6. **Weight Consideration** While forged rods are stronger, they are also slightly heavier than some aftermarket cast options. In high-RPM applications, this may have a negligible effect, but it s worth noting for extreme builds.

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The **Maxpeedingrods B84CPI forged connecting rods** are one of the best choices for a **high-power Nissan FJ20 Skyline (DR30 Silvia S12, 2.4L) build**, especially if you re running **significant boost (15 psi), extreme naturally aspirated power, or aggressive forced induction**. They offer **superior strength, durability, and compatibility with ARP 140mm studs**, making them a safe and reliable upgrade for serious tuners.

However, they are **not necessary** for mild builds (e.g., stock or low-power turbo setups). In those cases, **stock rods or high-quality aftermarket cast rods** (e.g., ARP cast rods, JE rods) would be a more cost-effective solution without sacrificing safety.

If you re committed to a **high-power, long-term build**, the B84CPI rods are an excellent investment. If you re on a budget or building modestly, consider alternatives first.

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- **If your build exceeds 300 hp (naturally aspirated) or 15 psi boost**, **go with the Maxpeedingrods B84CPI rods** paired with **ARP 140mm studs, high-quality bearings (e.g., ARP or JE), and a balanced crankshaft**. This setup will provide the best protection against failure and maximize reliability.

- **If your build is mild (under 250 hp NA or under 10 psi turbo)**, **stick with stock rods or aftermarket cast rods** (e.g., ARP cast rods) to save money while still maintaining safety.

- **Always have the work done by an experienced mechanic** to ensure proper installation, balancing, and bearing selection.

- **Consider a full engine support package** (e.g., ARP main studs, rod bolts, and bearings) if you re going the forged rod route, as these components work together for optimal strength.

For the **DR30 Silvia S12 2.4L**, this is one of the best rod upgrades available, but weigh the cost against your power goals before committing.

Details:

Best Costumer Service. >>you might also like. Fast Shipping. It begins from the date purchased.

Shot-preened finish to remove potential for stress risers, 6.High precision CNC machined,Precision rod cap alignment dowels, 7.Bores finished /- .005mm, 8.Balanced within 1per rod, 9. offers a minimum one year, unlimited mileage warranty on most of parts sold, some are otherwise noted longer manufacturer Each rod is magnetic particle tested to ensure free of flaws, 10.Use X-rated, sonic tested, 11.Custom Service. Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 14CM.

T V PRODUCT TEST AND ISO 9001 CERTIFIED, Factory Warranty.

part #: b84cpi prices

• $237.00-$476.79

specifications pistonrinro:

• for models: Fj20, S12
• for makes: Nissan
• brand: Maxpeedingrods
• mpn: B84cpi
• part type: Rod
• big end diameter: 53mm
• california prop 65 warning: California Prop 65 Warning
• center to center length: 140mm
• manufacturer warranty: 2 Years
• material: Steel
• notice: This Is Aftermarket Replcement Part
• pin type: Bronzed Bushing Floating Pin
• quantity: Set Of 6 Pieces
• small end diameter: 21mm
• surface finish: Extra Cost For Upgrading To Arp L19 Bolts
• universal fitment: No

returns pistonrinro:

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

shipping pistonrinro:

• type: Fixed
• cost: $0.00
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• transit: 4-7 Days

general pistonrinro:

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

seller pistonrinro:

• city: Rowland height, California
• rating: 99.1%
• # reviews: 21233

payments pistonrinro:

• other
• wallet: Apple-pay
• credit card: Discover

offer pistonrinro:

• availability: In Stock
• options: Ship-to-home
• started: March 26, 2026
• quantity: 1
• best offers: True
• sold: 0

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