1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13296400824372741
  3. MAXPEEDINGRODS 8N92BJ

MAXPEEDINGRODS 8N92BJ Beam Connecting Rod 4X EJ20 5.137

fits model: Ej22, Ej25, Wrx, Sti, Impreza. make: Subaru.

8n92bj Maxpeedingrods 4x I-beam Connecting Rod Rods For Subaru Impreza Wrx Sti Ej20 Ej22 Ej25 5.137 Inch

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 8N92BJ ), ( Part Type: Rod ), ( Big End Diameter: 55mm/2.165 ), ( Big End Width: 21.4mm/0.843 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Rod Length: 130.5mm/5.137 ), ( Small End Diameter: 23mm/0.905 ), ( Weight Tolerance: Balanced To / 1 Gram In Set ), ( Country Of Origin: China )

Review MAXPEEDINGRODS 4x I beam Connecting Rod Rods Subaru 5.137 Inch fits IMPREZA EJ22 EJ25 WRX STI

The **Maxpeeding Rods 8N92BJ 4x I-Beam Connecting Rods** represent a cutting-edge upgrade for Subaru s legendary WRX STI engines, specifically tailored for the **EJ20, EJ22, and EJ25** platforms, including the high-performance **5.137-inch stroke** variants. Engineered from **high-strength, precision-machined 4340 chromoly steel**, these rods are designed to deliver unparalleled rigidity, durability, and performance while maintaining a compact yet robust **I-beam cross-section** a hallmark of Maxpeeding s commitment to optimizing power delivery and reducing parasitic weight. Unlike traditional forged rods, the **8N92BJ** features a **4x I-beam design**, which enhances torsional stiffness by distributing stress more evenly across the rod s structure, minimizing flex under extreme loads. This architectural innovation allows for a **thinner yet stronger** rod profile, reducing reciprocating mass while preserving or even improving strength compared to conventional designs. The **5.137-inch stroke** compatibility ensures seamless integration with the STI s aggressive camshaft profiles and high-revving nature, making these rods an ideal choice for both **street-driven turbocharged applications** and **high-RPM forced induction builds**. Constructed with **precision grinding and heat treatment**, the rods undergo **stress-relief and shot-peening processes** to eliminate internal stresses and enhance fatigue resistance, ensuring longevity even under the most demanding conditions. Whether paired with a **turbocharged EJ25** pushing 1,000 horsepower or a **naturally aspirated EJ20** in a high-revving setup, these rods provide the **structural integrity** needed to handle the forces generated by modern tuning from **boost-heavy builds** to **nitrous-assisted or supercharged applications**. The **4x I-beam design** also contributes to **superior piston-to-wall clearance**, reducing friction and improving efficiency, while the **optimized rod length and big-end bolt pattern** ensure compatibility with aftermarket pistons and crankshafts without compromising engine balance. For the discerning STI enthusiast seeking **maximum power, reliability, and precision**, the **Maxpeeding Rods 8N92BJ** are a **game-changing upgrade**, blending advanced metallurgy with aerodynamic engineering to push the limits of what the EJ-series engine can achieve.

### **Pros and Cons of Buying Maxpeedingrods 8N92BJ 4x I-Beam Connecting Rods for Subaru Impreza WRX STI (EJ20, EJ22, EJ25, 5.137")**

#### **Pros:**

1. **Enhanced Strength and Durability** The 4x I-beam design provides significantly more rigidity and strength compared to stock rods. This reduces the risk of rod failure under extreme stress, such as in high-power builds or aggressive driving conditions.

2. **Improved Engine Reliability** The reinforced structure helps prevent rod bending or catastrophic failure, which is a common issue in heavily modified EJ engines. This is particularly beneficial for those running high compression ratios, forced induction, or extreme power levels.

3. **Better Compression and Power Output** The increased stiffness of the rods allows for better energy transfer from the pistons to the crankshaft, potentially improving compression and power delivery, especially in high-RPM applications.

4. **Compatibility with Aftermarket Pistons** These rods are designed to work with a variety of aftermarket pistons, making them a versatile choice for engine builds that require upgraded components.

5. **High-Quality Materials** Maxpeedingrods uses forged steel and precision machining, ensuring that the rods meet or exceed OEM standards in terms of strength and finish.

6. **Reduced Vibration and Noise** The I-beam design helps dampen engine vibration, leading to a smoother operation and reduced noise, which is beneficial for daily driving and track use.

7. **Warranty and Support** Maxpeedingrods offers warranties on their products, providing peace of mind for customers investing in high-performance parts.

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#### **Cons:**

1. **Cost** These rods are significantly more expensive than stock rods or even some aftermarket alternatives. The price reflects their high-quality construction and performance benefits, but it may be a substantial investment for some builders.

2. **Installation Complexity** Replacing connecting rods requires significant mechanical skill and specialized tools. If not installed correctly, there is a risk of damage to the engine or improper fitment. This may require professional installation, adding to the overall cost.

3. **Weight** While the rods are stronger, they are also heavier than stock rods. This added weight can slightly reduce the engine s responsiveness, particularly in high-revving applications where lighter rods might offer a slight advantage.

4. **Limited Availability of Stock Parts** Since these are aftermarket rods, finding compatible gaskets, seals, or other related parts may be more challenging than with OEM components. Ensuring all related components are compatible is essential.

5. **Potential for Overkill in Mild Builds** If the engine is not heavily modified or not running extreme power levels, these rods may offer little practical benefit beyond stock rods. For stock or mildly tuned EJ engines, the cost may not be justified.

6. **Crankshaft Compatibility** While these rods are designed for EJ engines, they must be paired with a compatible crankshaft. Using them with a mismatched crank (e.g., a stock crank with excessive wear) could negate their benefits or even cause issues.

7. **Learning Curve for Builders** For those new to engine building, the decision to use these rods requires research into engine dynamics, power goals, and proper fitment. Poor choices in rod length, piston-to-bore clearance, or rod bearing clearance can lead to problems.

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### **Conclusion:**

The Maxpeedingrods 8N92BJ 4x I-beam connecting rods are a high-quality, performance-oriented upgrade for Subaru EJ engines, particularly for those pursuing high-power builds, aggressive modifications, or reliability-focused tuning. They offer significant strength advantages over stock rods and are well-suited for engines running forced induction, high compression, or extreme power levels. However, they come at a premium cost and require careful installation and compatibility checks.

For **stock or mildly modified EJ engines**, these rods may be unnecessary and overkill. However, for **serious builders, drift cars, or high-performance applications**, they are a worthwhile investment to enhance engine reliability and power potential.

### **Recommendation:**

- **Use these rods if:** You are building a high-power EJ engine (e.g., 600 hp with forced induction), plan to run aggressive modifications, or prioritize engine longevity and reliability.

- **Avoid these rods if:** Your engine is stock or mildly tuned, and you are on a tight budget. In such cases, stock rods or lighter aftermarket rods (e.g., ARP or other forged options) may suffice.

- **Consider alternatives if:** You want a balance between cost and performance. Other brands like ARP, JE or even stock rods with proper maintenance may be more suitable for less extreme builds.

- **Always pair with:** A compatible crankshaft, pistons, bearings, and proper lubrication to maximize performance and safety.

Ultimately, these rods are best suited for **serious tuners and performance enthusiasts** who demand the highest level of engine protection and power potential from their Subaru EJ engine.

Details:

Horsepower Rating: Advertised horsepower rating: 600HP-800HP. Pin Type: Floating Piston. Our representatives will provide you with detailed instructions on how to proceed. I-Beam Design: helps improve Stiffness, reduce stress risers and weight.

Boxes, APO/FPO addresses, or Military Mail Boxes. High Precision Control: Balanced within: /- 1 gram per rod. YRMDU 4X I-Beam Connecting Rod Rods for Subaru Impreza WRX STI EJ20 EJ22 EJ25 5.137. One Year Unlimited Mileage Quality Guarantee.

Bores finished to: /- .005mm or .0002.

part #: 8n92bj price

  • $232.00

specifications pistonrinro:

  • for models: Ej22, Ej25, Wrx, Sti, Impreza
  • for makes: Subaru
  • brand: Maxpeedingrods
  • mpn: 8n92bj
  • part type: Rod
  • big end diameter: 55mm/2.165
  • big end width: 21.4mm/0.843
  • california prop 65 warning: California Prop 65 Warning
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part.
  • pin type: Bronzed Bushing Floating Pin
  • rod length: 130.5mm/5.137
  • small end diameter: 23mm/0.905
  • weight tolerance: Balanced To / 1 Gram In Set
  • country of origin: China

returns pistonrinro:

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

offer pistonrinro:

  • options: Ship-to-home
  • quantity: 6
  • sold: 0
  • started: April 23, 2026
  • best offers: True
  • availability: In Stock

shipping pistonrinro:

  • cost: $0.00
  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • type: Fixed
  • transit: 3-6 Days
  • class: Standard

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seller pistonrinro:

  • city: Rowland height, California
  • rating: 99.7%
  • # reviews: 1578

general pistonrinro:

  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
for models: ej22, ej25, wrx, sti, impreza, for makes: subaru, part type: rod, big end diameter: 55mm/2.165, big end width: 21.4mm/0.843, california prop 65 warning: california prop 65 warning, note: no instruction included, notice: this is aftermarket replcement part., pin type: bronzed bushing floating pin, rod length: 130.5mm/5.137, small end diameter: 23mm/0.905, weight tolerance: balanced to / 1 gram in set, country of origin: china,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, sku: 13296400824372741,
Maxpeedingrods 8N92BJ Is Similar To:
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1 offer $232.00 USD
  • New other (see details). Offer #1 priced at $232.00 + $20.00 shipping estimate = $252.00* total. Forged 4340 steel. Item: MaxpeedingRods Forged Connecting Rods.+$20.00 shipping

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