MAXPEEDINGRODS RYPL4U Connecting Rods Arp Bolts Skyline 6X 4340 DR30 Silvia 5.512

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: RYPL4U ), ( Part Type: Rod Bolt ), ( 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 6x 4340 Connecting Rods Arp Bolts Nissan Skyline Silvia 5.512 Inch fits FJ20 S12

The **Maxpeedingrods Rypl4U 6x 4340 Forged Connecting Rods** paired with **ARP 1000 Series High-Strength Bolts** represent a premium, high-performance upgrade package meticulously engineered for the demanding requirements of the **Nissan FJ20 Skyline (DR30)**, **Silvia S12**, and **5.512** platforms. Designed to withstand extreme stress, these **6x 4340 forged steel connecting rods** are forged from **high-grade 4340 alloy steel**, a material renowned for its exceptional strength-to-weight ratio, fatigue resistance, and ability to endure the brutal forces generated by aggressive engine builds, including forced induction setups, high-revving turbocharged applications, and nitrous oxide (N2O) enhancements. Each rod is **precision-machined to exacting tolerances**, ensuring optimal fitment with the crankshaft and piston assembly while minimizing weight for improved inertia and rotational smoothness critical for high-RPM performance. The **ARP 1000 Series bolts**, featuring **1000 psi tensile strength**, are **cold-forged from 300M steel** and treated with **ARP s proprietary heat treatment process**, delivering unmatched clamping force and reliability. These bolts are **pre-loaded to manufacturer specifications** and include **ARP s signature high-strength washers**, ensuring a secure, vibration-dampening seal that prevents bolt stretch and loosening under extreme conditions. Together, this package transforms the stock rod and bolt assembly into a **durable, high-performance component** capable of handling **1,000 horsepower** and **1,200 lb-ft of torque** with confidence. Whether you're pushing a **turbocharged VR38DETT**, a **supercharged VG30DE**, or a **highly modified NA VR38**, these rods and bolts provide the structural integrity needed to push your engine to its limits without compromising safety or longevity. Built for serious enthusiasts who demand **race-ready reliability**, this upgrade is a **must-have** for those seeking to unlock the full potential of their Nissan FJ20-based platform.

### **Pros and Cons of Buying Maxpeedingrods Rypl4U 6x 4340 Connecting Rods with ARP Bolts for Nissan FJ20 Skyline (DR30 Silvia S12, 5.512)**

1. **High-Strength Material** The **4340 alloy steel** rods are significantly stronger than stock rods, capable of handling higher torque and RPM without excessive flex or fatigue. This is critical for forced induction builds or aggressive tuning.

2. **ARP Bolts Included** The kit comes with **ARP 12-point bolts**, which are a major upgrade over stock bolts. ARP bolts are known for their reliability, thread engagement, and ability to handle extreme loads without stripping or loosening.

3. **Balanced Weight** The rods are **forged and balanced**, reducing reciprocating mass compared to stock rods, which can improve engine balance and reduce stress on the crankshaft and bearings.

4. **Compatibility** These rods are designed specifically for the **Nissan RB26DETT (FJ20 Skyline DR30 Silvia S12)**, ensuring proper fitment with minimal machining required.

5. **Durability for Forced Induction** If you plan to run **nitrous, turbo, or supercharger**, these rods will provide a much safer foundation than stock components, reducing the risk of catastrophic failure.

6. **Reputation of Maxpeedingrods** The brand is well-regarded in the tuning community for producing high-quality, performance-oriented parts, often backed by good customer support.

7. **Reduced Risk of Rod Bending** The increased stiffness of 4340 rods helps prevent the bending that can occur under extreme loads, especially in high-RPM applications.

8. **Potential for Higher Power Output** With stronger rods and bolts, you can push the engine harder without worrying about rod failure, allowing for more aggressive tuning (e.g., bigger turbos, higher boost, or nitrous setups).

---

1. **Cost** This is a **premium kit**, and the price reflects the quality. For a stock or mildly tuned engine, the cost may not be justified unless you're planning significant power increases.

2. **Installation Complexity** Replacing rods requires **disassembly of the entire engine**, including removing the crankshaft, pistons, and bearings. This is a **labor-intensive job** best left to experienced mechanics unless you have the skills and tools.

3. **Additional Machining May Be Required** While these rods are designed to fit, some users report needing **minor machining** (e.g., rod journal polishing or piston-to-rod clearance checks) to ensure a perfect fit.

4. **Not Necessary for Mild Builds** If you're only running **stock or mild forced induction (e.g., 10-15 psi boost)**, stock rods and bolts may suffice, and upgrading could be seen as overkill.

5. **Potential for Overkill on Stock Engines** A stock RB26DETT (without major modifications) may never reach the stress levels these rods are designed for, making the upgrade unnecessary unless you're planning future power increases.

6. **Weight Consideration** While the rods are balanced, they are **heavier than stock rods**, which could slightly reduce high-RPM responsiveness if the engine is very lightly built.

7. **ARP Bolt Learning Curve** ARP bolts require **proper torque specification and installation technique** (e.g., no cross-threading, correct lubrication). Improper installation can lead to failure, so extra care is needed.

8. **Cost of Additional Components** If you're upgrading rods and bolts, you may also need to consider **new bearings, crankshaft seals, and possibly a new crankshaft** if it's worn, adding to the overall expense.

---

- **Building a high-power RB26DETT** (e.g., turbocharged, supercharged, or nitrous-equipped).

- **Seeking long-term reliability** and wanting to eliminate rod failure as a concern.

- **Committed to a major engine project** where every component is upgraded for durability.

- **Willingly investing in premium parts** that will support aggressive tuning.

However, if you're running a **stock or mildly modified engine** (e.g., stock or mild boost), these rods may be **overkill** and not worth the cost unless you plan to modify the engine significantly in the future.

---

- **If you're planning a serious power increase (20 psi boost, nitrous, or extreme tuning), this kit is highly recommended.** The combination of **4340 rods and ARP bolts** will provide the strength and reliability needed to handle high loads without risking catastrophic failure.

- **If you're on a budget or only doing mild modifications**, consider **stock rods with ARP bolts** or a **budget rod kit** (e.g., some aftermarket 4140 rod kits) to save money while still improving reliability.

- **Always pair this upgrade with a full engine rebuild** (new bearings, seals, pistons, and crankshaft if needed) to ensure the entire assembly is optimized for performance.

- **Consult with a trusted mechanic or tuner** before committing, as they can help assess whether this upgrade is necessary for your specific build goals.

Ultimately, this is one of the **best rod-and-bolt upgrades** for the RB26DETT, but it s best suited for **high-power applications** rather than stock or lightly modified engines.

Details:

part #: rypl4u prices

• $237.00-$476.79

specifications pistonrinro:

• for models: Fj20, S12
• for makes: Nissan
• brand: Maxpeedingrods
• mpn: Rypl4u
• part type: Rod Bolt
• 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

payments pistonrinro:

• wallet: Google-pay
• other
• credit card: Mastercard

seller pistonrinro:

• rating: 99.7%
• # reviews: 25940
• city: Rowland height, California

shipping pistonrinro:

• carrier: FedEx
• transit: 4-6 Days
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• type: Fixed
• cost: $0.00

returns pistonrinro:

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

general pistonrinro:

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

offer pistonrinro:

• best offers: True
• availability: In Stock
• started: April 11, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home

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