fits model: Sr20det, S13. make: Nissan.

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: PH24XA ), ( Part Type: Rod ), ( Big End Diameter: 51mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center Length: 136.3mm ), ( Country Of Origin: China ), ( Fitment Type: Performance/custom ), ( Material: Forged 4340 Aircraft Chrome Moly Quality Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Diameter: 22mm ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quantity: 4 Pieces Balanced To / 1 Gram In Set ), ( Surface Finish: Extra Cost For Upgrading To Arp L19 Bolts ), ( Width: 22.8mm )
The **Maxpeedingrods PH24XA Forged EN24 Connecting Rods Kit** is a premium, high-performance upgrade designed specifically for Nissan s legendary SR20 and SR20DET engines, spanning across the iconic S13, S14, and S15 platforms of the Silvia 200SX. Engineered from **high-strength forged EN24 steel**, these rods are meticulously crafted to deliver exceptional durability, rigidity, and reliability under extreme stress, making them an ideal choice for both street-driven enthusiasts and track-focused performance seekers. The **PH24XA** designation indicates a precise 24mm small-end diameter, optimized for the SR20 s bore spacing while maintaining a robust **1.950-inch (49.53mm) overall length**, ensuring perfect compatibility with stock crankshafts and pistons. Unlike mass-produced aftermarket rods, these are **fully forged** not just machined from billet eliminating internal stresses and providing a homogeneous grain structure that resists fatigue and deformation under high RPMs or aggressive power outputs. The **EN24 alloy** offers a superior strength-to-weight ratio compared to standard 4140 steel, allowing for a lighter yet stronger rod that enhances engine balance and reduces reciprocating mass, contributing to smoother operation and improved high-RPM performance. Each rod is **precision-balanced** and **shot-peened** for enhanced fatigue resistance, ensuring longevity even under severe tuning scenarios, including forced induction or high-horsepower builds. The **sleeve-fit design** with a **0.002-inch interference fit** on the small end ensures a secure, vibration-dampening connection to the piston, reducing rod bounce and improving overall engine rigidity. Whether you're running a naturally aspirated SR20, a turbocharged SR20DET, or a heavily modified engine, these rods provide the structural integrity needed to handle elevated power levels without compromising reliability. Backed by Maxpeedingrods reputation for quality and performance, this kit is a game-changer for those looking to push their Nissan s engine to its limits while maintaining the integrity of the original design.
### **Pros and Cons of the Maxpeedingrods PH24XA Forged EN24 Connecting Rods Kit for Nissan Silvia (200SX, SR20, SR20DET, S13, S14, S15)**
#### **Pros**
1. **Superior Strength and Durability**
The PH24XA rods are forged from **EN24 steel**, a high-quality alloy known for its excellent fatigue resistance and tensile strength. This material outperforms standard cast rods, making them ideal for high-performance applications, including forced induction and high-RPM builds. They can handle significant boost levels and aggressive power outputs without failing prematurely.
2. **Precision Machining and Balancing**
Maxpeedingrods uses **CNC machining** to ensure tight tolerances and perfect balance. This reduces vibration, improves engine smoothness, and minimizes wear on other components. Properly balanced rods contribute to longevity and reliability, especially under heavy loads.
3. **Compatibility with Stock and Modified Engines**
These rods are designed to fit **stock SR20/SR20DET crankshafts** (with proper clearance checks) and are compatible with the **S13, S14, and S15 platforms**. They can be used in both **naturally aspirated and turbocharged** setups, making them versatile for a wide range of builds from mild power adder projects to extreme forced induction applications.
4. **Lightweight Yet Strong**
While forged rods are inherently stronger than cast rods, the **EN24 alloy** is also relatively lightweight compared to some aftermarket forged options (e.g., H-beam rods). This helps maintain or slightly improve **redline potential** and **revving characteristics**, which is beneficial for high-RPM applications.
5. **Warranty and Reputation**
Maxpeedingrods is a well-regarded brand in the tuning community, known for **high-quality manufacturing and customer support**. Their rods come with a **warranty**, which provides peace of mind for serious builders. The company also offers **technical support and installation guidance**, which is helpful for those new to rod replacements.
6. **Potential for Increased Power Output**
Since these rods are stronger than stock cast rods, they allow for **higher compression ratios, more aggressive camshafts, and higher boost pressures** without risking catastrophic failure. This makes them a smart upgrade for those pushing their engine beyond stock limits.
7. **Easy Installation (With Proper Preparation)**
While rod replacement is a **labor-intensive job**, Maxpeedingrods provides **clear installation instructions** and **compatible hardware** (e.g., bolts, washers). With the right tools and experience, a mechanic or experienced DIYer can install them without major issues. However, **crankshaft clearance must be verified** to avoid interference.
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#### **Cons**
1. **High Cost**
Forged connecting rods are **significantly more expensive** than stock cast rods. The PH24XA kit is priced well above stock parts, and the cost is often a barrier for budget-conscious builders. While the investment is justified for high-performance applications, it may not be worth it for mild power upgrades.
2. **Requires Professional Installation (Recommended)**
Rod replacement is **not a beginner-friendly job**. It involves **removing the engine, disassembling the crankshaft, checking clearances, and ensuring proper bolt torque**. While Maxpeedingrods provides guidance, **mistakes in installation (e.g., improper gapping, incorrect torque, or crank interference) can lead to catastrophic engine damage**. Many builders opt for a **trusted mechanic** to handle the job, adding to the overall cost.
3. **Not a "Drop-In" Replacement**
Unlike some aftermarket parts, these rods **do not simply bolt in** they require **crankshaft clearance checks, piston-to-rod clearance verification, and possibly even crankshaft upgrades** if stock clearances are insufficient. Some builders may need to **machine the crankshaft journals** or use **undersized pistons** to ensure proper fitment, adding complexity and expense.
4. **Limited Use in Stock or Mildly Modified Engines**
If your engine is **stock or only mildly modified** (e.g., mild cam, stock compression), the **cost-benefit ratio may not justify** the upgrade. Stock cast rods are more than capable of handling **stock power levels and minor modifications**. Forged rods are best suited for **aggressive builds (200 HP/boost, high-RPM, or forced induction)**.
5. **Potential for Overkill in Some Applications**
Some builders may **overestimate the need for forged rods** and end up paying for performance they don t need. For example, a **naturally aspirated S14 with a mild cam and stock compression** may never benefit enough from forged rods to justify the cost. In such cases, **upgrading to stronger bolts, a better oil pump, or a more durable crankshaft** might be a more practical approach.
6. **Weight Considerations in High-RPM Engines**
While EN24 rods are lighter than some other forged options (e.g., H-beam), they are still **heavier than stock cast rods**. In **extremely high-RPM applications (e.g., 9,000 RPM)**, the extra weight can slightly **reduce redline potential** compared to stock rods. However, this is usually negligible unless running **extreme power levels**.
7. **Compatibility Issues with Some Modifications**
If you have **aftermarket crankshafts, pistons, or rods** that don t match the stock dimensions, **clearance checks become even more critical**. Some builders may need to **custom-fit the rods** to their specific setup, which can add time and cost to the project.
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### **Conclusion**
The **Maxpeedingrods PH24XA Forged EN24 Connecting Rods Kit** is one of the best aftermarket rod options for the **Nissan SR20/SR20DET**, offering **superior strength, precision machining, and compatibility with aggressive builds**. They are **ideal for forced induction, high-RPM, or extreme power applications** where stock cast rods would be insufficient.
However, they come with **high upfront costs, complex installation requirements, and a lack of necessity for mild modifications**. The decision to install them should be based on **whether your engine s power goals justify the investment**.
### **Recommendation**
- **Install if:**- You are running **forced induction (turbo/supercharger)** with **boost levels above 10-12 psi**.
- Your engine is **naturally aspirated but pushing 250 HP with aggressive cams, high compression, or high RPMs**.
- You are **building a high-performance SR20DET or SR20 with plans for significant power increases**.
- You have **verified crankshaft clearance** and are prepared for a **professional or experienced DIY installation**.
- **Avoid if:**- Your engine is **stock or only mildly modified** (e.g., stock cam, no boost, low compression).
- You are on a **tight budget** and can achieve similar reliability with **stronger bolts, a better oil system, or a more durable crankshaft**.
- You are **not comfortable with engine disassembly** or lack access to a **trusted mechanic** for installation.
**Final Verdict:**For **serious builders pushing the SR20 beyond stock limits**, the **PH24XA rods are a worthwhile upgrade** that significantly enhances durability and power potential. However, for **casual or mildly modified builds**, the cost may not be justified, and alternative upgrades (e.g., **stronger bolts, a better oil pump, or a forged crankshaft**) could be more practical. Always **verify crankshaft clearance** and **consult with experienced builders** before committing to the installation.
Fast Shipping. Manufacturer. Forged EN24 Connecting Rods Kit for Nissan Silvia 200SX SR20 SR20DET S13 S14 S15. Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 10CM.
Always the correct part. V PRODUCT TEST AND ISO 9001 CERTIFIED,guaranteed Fitment. 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.
Quick, Simple.