1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 12366667355151741
  3. MAXPEEDINGRODS QE6U17

MAXPEEDINGRODS QE6U17 Beam Connecting Rod 4X EJ20 5.137

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

Qe6u17 Maxpeedingrods 4x I-beam Connecting Rod Rods For Subaru Impreza Wrx Sti Ej20 Ej22 Ej25 5.137 Inch

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: QE6U17 ), ( 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 )

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

The **Maxpeedingrods QE6U17 4x I-Beam Connecting Rods** represent a cutting-edge upgrade for Subaru WRX STI enthusiasts seeking to maximize engine performance, durability, and reliability across the iconic **EJ20, EJ22, and EJ25** inline-five platforms, including the **5.137-inch stroke** variants. Engineered from **high-grade, forged 4340 steel**, these rods are meticulously crafted to withstand the extreme stresses of high-revving, high-horsepower applications while maintaining precision and structural integrity. The **I-beam design** is not merely aesthetic it provides superior torsional rigidity and weight distribution, reducing rod deflection under heavy loads and minimizing the risk of catastrophic failure, even under extreme boost or forced induction scenarios. Each rod is **polished to a mirror finish** and **shot-peened** for enhanced fatigue resistance, ensuring longevity in both naturally aspirated and turbocharged setups. The **4x configuration** (four rods per engine) is optimized for the Subaru EJ series, offering a perfect balance between strength and weight savings, allowing for improved piston-to-rod ratio and better power transfer. These rods are **fully compatible** with the **STI s 5.137-inch stroke** engines, making them an ideal choice for builds ranging from mild tune-ups to full-blown **1,000 horsepower** monsters. Whether paired with aftermarket pistons, upgraded crankshafts, or high-performance camshafts, the **Maxpeedingrods QE6U17** rods deliver the robustness and precision needed to push the limits of the EJ engine without compromising on safety or performance. Built to withstand the demands of modern turbocharged and supercharged applications, these rods are a testament to Maxpeedingrods commitment to delivering **high-performance, race-proven components** that elevate the Subaru WRX STI to new levels of power and reliability.

### **Pros and Cons of Buying Maxpeedingrods QE6U17 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 greater strength compared to stock rods, reducing the risk of catastrophic failure under high stress, especially in forced induction applications. The thicker walls and reinforced structure better handle the increased torque and RPM ranges common in tuned EJ engines.

2. **Improved Reliability for Forced Induction** These rods are specifically designed for high-performance builds, including turbocharged and supercharged setups. The added rigidity helps prevent rod bending or fatigue, which is a common failure point in heavily modified engines.

3. **Better Compatibility with High-Performance Components** The rods are engineered to work well with other Maxpeedingrods parts (such as pistons, crankshafts, and oil squirters), ensuring a balanced and optimized engine build. This can lead to smoother operation and reduced internal stress.

4. **Lightweight Yet Strong** While still robust, the I-beam design is lighter than some alternative rod designs (e.g., H-beam), which can help maintain better reciprocating mass balance and reduce inertia-related stress on the crankshaft.

5. **Warranty and Support** Maxpeedingrods offers warranties on their rods, providing some peace of mind against manufacturing defects. Their reputation in the tuning community is generally positive, with good customer support for installation and troubleshooting.

6. **Custom Fit for EJ Engines** These rods are specifically designed for the EJ20, EJ22, and EJ25 platforms, ensuring proper fitment with the stock crankshaft journals and rod bearings. The 5.137" length is ideal for these engines, maintaining proper rod length ratios.

7. **Reduced Risk of Rod Bending** One of the most common failure points in EJ engines is rod bending due to excessive torque or poor rod strength. The I-beam design distributes stress more evenly, reducing this risk.

8. **Compatibility with Aftermarket Pistons** These rods work well with a variety of aftermarket pistons (e.g., Maxpeedingrods, JE, or other high-quality brands), allowing for custom stroke and compression ratio builds without compromising strength.

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#### **Cons:**

1. **High Cost** High-performance rods like these are significantly more expensive than stock rods. The price point may be prohibitive for casual tuners or those on a tight budget, especially when factoring in additional costs for pistons, bearings, and installation labor.

2. **Requires Full Engine Rebuild** Installing these rods necessitates a complete engine teardown, including crankshaft inspection, bearing replacement, and often a new oil pump and oil squirters. This adds to labor costs and downtime, making it a substantial investment.

3. **Installation Complexity** While not overly difficult, installing aftermarket rods requires precision and experience. Improper installation (e.g., incorrect bearing clearance, misaligned rods, or improper torque specs) can lead to premature failure. Many tuners opt to have this done by a professional mechanic.

4. **Limited Stock Availability** Like many high-performance parts, these rods may not always be in stock, leading to potential delays in ordering. Backorders or long lead times can disrupt build schedules.

5. **Potential for Overkill on Mild Builds** If the engine is only lightly modified (e.g., mild turbo, stock or near-stock bottom end), these rods may offer excessive strength that isn t fully utilized. For such builds, a more budget-friendly rod upgrade (e.g., forged stock-length rods) might suffice.

6. **Weight Considerations** While the I-beam design is strong, it is heavier than some alternative rod designs (e.g., tubular or hollow rods). This added weight can slightly increase reciprocating mass, which may require tuning adjustments to optimize engine balance and power delivery.

7. **Compatibility with Stock Crankshafts** While these rods are designed for EJ engines, using them with a stock crankshaft may not fully leverage their potential. A high-quality aftermarket crankshaft (e.g., Maxpeedingrods or JE) is often recommended to maximize performance and reliability.

8. **Ongoing Maintenance Requirements** High-performance rods, like any critical engine component, require proper maintenance. This includes regular oil changes with high-quality oil, monitoring for oil leaks, and ensuring the engine is not operated beyond its intended parameters (e.g., excessive boost, RPM, or torque).

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### **Conclusion:**

The **Maxpeedingrods QE6U17 4x I-Beam connecting rods** are one of the best aftermarket rod options for Subaru EJ engines, particularly for forced induction builds. They offer a significant upgrade in strength, reliability, and compatibility with high-performance components. However, they come with a high price tag, require a full engine rebuild, and are best suited for serious tuners who are pushing their engines to extreme limits.

For **stock or mildly modified EJ engines**, these rods may be overkill and unnecessarily expensive. In such cases, a more budget-friendly rod upgrade (e.g., forged stock-length rods or aftermarket rods like those from JE or Scat) could provide adequate strength without the premium cost.

For **aggressive builds (turbocharged, supercharged, or high-RPM applications)**, these rods are an excellent choice, provided the rest of the engine is properly supported with matching components (e.g., crankshaft, pistons, bearings, and oil system).

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### **Recommendation:**

- **If you are building a high-performance EJ engine (especially with forced induction) and want the strongest, most reliable rods available**, the **Maxpeedingrods QE6U17 4x I-Beam rods** are a top-tier choice. Pair them with a high-quality crankshaft, forged pistons, and a robust oil system to ensure optimal performance.

- **If you are on a budget or only mildly modifying your EJ engine**, consider alternative rod options (e.g., forged stock-length rods or aftermarket rods from reputable brands) to balance cost and performance.

- **Always consult with a trusted mechanic or engine builder** before committing to these rods, as proper installation and supporting components are critical to their success.

- **Ensure your build includes a reliable oil system** (e.g., Maxpeedingrods oil squirters, upgraded oil pump) to prevent rod bearing failure, which is a common issue in high-performance EJ engines.

Ultimately, these rods are a **strong recommendation for serious tuners** who prioritize reliability and performance over cost, but they are not necessary for every build.

Details:

Horsepower Rating: Advertised horsepower rating: 600HP-800HP. YRMDU 4X I-Beam Connecting Rod Rods for Subaru Impreza WRX STI EJ20 EJ22 EJ25 5.137. Boxes, APO/FPO addresses, or Military Mail Boxes. One Year Unlimited Mileage Quality Guarantee.

Our representatives will provide you with detailed instructions on how to proceed. Bores finished to: /- .005mm or .0002. Pin Type: Floating Piston. I-Beam Design: helps improve Stiffness, reduce stress risers and weight.

High Precision Control: Balanced within: /- 1 gram per rod.

part #: qe6u17 price

  • $232.00

specifications pistonrinro:

  • for models: Ej22, Ej25, Wrx, Sti, Impreza
  • for makes: Subaru
  • brand: Maxpeedingrods
  • mpn: Qe6u17
  • 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

general pistonrinro:

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

shipping pistonrinro:

  • cost: $0.00
  • service: FedEx Ground / FedEx Home Delivery
  • type: Fixed
  • carrier: FedEx
  • transit: 5-8 Days
  • class: Standard

seller pistonrinro:

  • city: Rowland height, California
  • # reviews: 781
  • rating: 99.5%

offer pistonrinro:

  • quantity: 5
  • started: February 12, 2026
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0

returns pistonrinro:

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

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  • credit card: Diners-club
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  • wallet: Google-pay
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,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, sku: 12366667355151741,
Maxpeedingrods QE6U17 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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