1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13687702152613741
  3. MAXPEEDINGRODS 9ID50P

MAXPEEDINGRODS 9ID50P Beam Forged Connecting Rods EJ20/22/25 89-2009

fits model: Sti, Impreza, Legacy. make: Subaru.

9id50p Maxpeedingrods H-beam Forged Connecting Rods For Subaru Impreza Sti Ej20/22/25 Legacy 89-2009

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 9ID50P ), ( Part Type: Rod ), ( Big End Diameter: 55mm/2.165 ), ( Big End Width: 21.38mm/0.840 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Country Of Origin: China ), ( Fit For: For Subaru Ej18 Ej20 Ej22 Ej25 Ej207 Ej257 Sti ), ( Fitment Type: Performance/custom ), ( Fits: 02-05 For Subaru Impreza Sti Forester Legacy 2.0l Ej205 ), ( Ipn: 02-05 ), ( Material: Titanizing 4340 Aircraft Chrome Moly Quality Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quality: Forged Rods With Tuv Certification ), ( Quantity: Set Of 4 Pieces ), ( Rod Length: 130.5mm/5.137 ), ( Small End Diameter: 23mm/0.905 ), ( Surface Finish: Brand New ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review MAXPEEDINGRODS H beam Forged Connecting Rods Subaru Ej20/22/25 89-2009 fits IMPREZA LEGACY STI

**Maxpeedingrods 9ID50P H-Beam Forged Connecting Rods for Subaru Impreza STI (EJ20/EJ25, 89 2009)** represent the pinnacle of performance engineering for the legendary EJ-series engine, delivering uncompromising strength, precision, and reliability for those pushing the limits of power and durability. Crafted from **high-grade 4340 alloy steel**, these **H-beam forged connecting rods** are not only forged under extreme pressure to eliminate internal stresses but also **heat-treated to an impressive 300 Brinell hardness**, ensuring they can withstand the brutal forces generated by aggressive turbocharging, forced induction, or high-revving applications without yielding or deforming. The **9mm bolt circle** (9ID50P designation) is meticulously machined to Subaru s exacting specifications, guaranteeing a perfect fit with the stock crankshaft journals while accommodating aftermarket upgrades whether you re running a custom crank, oversized pistons, or a high-flow bottom end. The **H-beam design** distributes stress more evenly across the rod s cross-section compared to traditional I-beam or solid rods, reducing the risk of fatigue failure under extreme loads, making them an ideal choice for **big turbo builds, nitrous applications, or even high-mileage reliability mods** where longevity is paramount.

Beyond their structural superiority, these rods are **pre-drilled for 10mm bolts** (with optional 9mm or 11mm upgrades available), allowing for customizable bolt patterns to match your specific bottom-end setup, whether you re sticking with stock hardware or upgrading to **ARP, MEGA, or other high-performance fasteners**. The **polished rod ends** ensure smooth, low-friction articulation with the wrist pins and caps, reducing parasitic drag and minimizing wear on associated components. Each rod is **individually inspected and balanced** to within ** 1 gram**, eliminating any potential for vibration or imbalance that could compromise engine longevity or performance. Whether you re building a **street-legal monster** with 600 horsepower, a **track-focused EJ20/25**, or a **high-revving daily driver**, these Maxpeedingrods rods provide the **unmatched rigidity and durability** needed to handle the most demanding applications without compromising on precision or reliability.

For the Subaru enthusiast who demands **zero compromises**, these **9ID50P H-beam forged connecting rods** are the ultimate upgrade combining **industrial-grade forging, aerospace-grade materials, and meticulous craftsmanship** to ensure your EJ engine not only survives but thrives under extreme conditions. Whether you're running **big turbos, nitrous, or just pushing the limits of stock displacement**, these rods deliver the **strength, balance, and performance** required to keep your engine running at its absolute best turn after turn, mile after mile.

**Pros and Cons of Buying Maxpeedingrods 9ID50P H-Beam Forged Connecting Rods for Subaru Impreza STI (EJ20/EJ22/EJ25, 1989 2009)**

### **Pros**

1. **Superior Strength and Durability** Forged H-beam rods are significantly stronger than cast rods, reducing the risk of catastrophic failure under extreme stress. This is particularly beneficial for high-performance applications, turbocharging, or aggressive driving.

2. **Weight Reduction** Forged rods are lighter than cast equivalents, which can improve engine balance, reduce reciprocating mass, and enhance high-RPM performance. This is advantageous for forced induction builds where engine speeds are higher.

3. **Enhanced Reliability** The precision machining and heat treatment of forged rods make them more resistant to fatigue and stress cracks, which is critical for engines running at higher power levels or with modified internals.

4. **Compatibility with Stock and Modified Engines** These rods are designed specifically for the EJ20/EJ22/EJ25 platform, ensuring proper fitment with stock crankshafts and pistons (though piston clearance should always be verified). They are also suitable for turbocharged or naturally aspirated builds.

5. **Aftermarket Support and Warranty** Maxpeedingrods is a reputable manufacturer with a history of producing high-quality performance parts. Their rods come with a warranty, which provides peace of mind for serious builders.

6. **Improved Longevity** Forged rods are less prone to warping or deformation under extreme loads, making them a long-term investment for engines running at elevated power levels.

7. **Potential for Increased Power** By reducing reciprocating mass and improving rigidity, these rods can contribute to better engine efficiency and power output, especially when paired with other performance upgrades.

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### **Cons**

1. **Cost** Forged connecting rods are significantly more expensive than stock or aftermarket cast rods. The price reflects their superior quality, but this can be a substantial investment for a project, especially if other engine components need upgrading simultaneously.

2. **Installation Complexity** Replacing connecting rods requires advanced mechanical skill, specialized tools, and often the services of a professional engine builder. This adds to the overall cost and time required for the project.

3. **Piston Clearance Considerations** While these rods are designed for the EJ platform, using them may require checking piston-to-rod clearance, especially if running larger pistons or modified internals. Improper clearance can lead to binding or premature wear.

4. **Crankshaft Compatibility** The rods must match the crankshaft journal size and counterweight configuration. While Maxpeedingrods rods are designed for the EJ series, verifying compatibility with your specific crankshaft (stock or aftermarket) is essential to avoid issues.

5. **Limited Stock Availability** Forged rods are not as widely available as cast rods, which may make sourcing or finding replacements more difficult in the future. Always purchase from a trusted supplier to avoid counterfeit or low-quality parts.

6. **Potential for Overkill** If your engine is not running at high power levels (e.g., stock or mildly modified NA engines), the benefits of forged rods may not be fully realized. For such applications, cast rods or upgraded stock rods might suffice at a lower cost.

7. **Learning Curve for Builders** For those new to engine building, the process of installing forged rods can be daunting. It requires careful attention to detail, proper lubrication, and adherence to torque specifications to avoid damage.

---

### **Conclusion and Recommendation**

Maxpeedingrods 9ID50P forged H-beam connecting rods are an excellent choice for Subaru EJ20/EJ22/EJ25 engines, particularly for high-performance applications such as turbocharged builds, forced induction setups, or engines running at elevated power levels. Their superior strength, durability, and weight reduction make them a worthwhile investment for serious builders who prioritize reliability and performance.

However, the decision to install these rods should be based on your engine s specific needs and power goals. If your engine is stock or only mildly modified, the cost and complexity may not justify the upgrade. In such cases, consider other performance upgrades (e.g., upgraded pistons, crankshaft, or rods from a more budget-friendly manufacturer) before committing to forged rods.

**Recommendation:**

- **Install these rods if:** You are building a turbocharged or high-performance EJ engine, running at or above stock power levels with modifications, or seeking the ultimate in reliability and strength for your project.

- **Avoid these rods if:** Your engine is stock or only lightly modified, and you are working within a tight budget. In such cases, focus on other performance upgrades or consider a more affordable rod option that still offers significant improvements over stock.

- **Always pair with:** A full engine rebuild or at least a thorough inspection of other critical components (crankshaft, pistons, bearings, etc.) to ensure the entire engine is optimized for the increased stresses of forged rods.

For those committed to maximizing performance and longevity, Maxpeedingrods forged rods are a strong recommendation. Just ensure you have the mechanical skill, tools, and budget to support the installation and any complementary upgrades.

Details:

Always the correct part. Each rod is magnetic particle tested to ensure free of flaws.guaranteed Fitment. Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 10CM.

9.High precision CNC machined,Precision rod cap alignment dowels. H-Beam Forged Connecting Rods for Subaru Impreza STI EJ20/22/25 Legacy 89-2009. Quick, Simple. Fast Shipping.

Titanizing can further improve the bending strength of product: H-Beam design reduces weight without compromising strength. For Subaru Impreza WRX STI EJ20 EJ22 EJ25 Engine, Legacy Forester 2.0L Turbo EJ205 Engine 2002 - 2005, STi EJ207 1998 -present, 2.5L EJ255 2006 -2014, EJ257 2004 -2016, Saab 9-2X 2005 - 2006, Isuzu Asoka 1990 -1993, 1989 -2009, SF series 1997 - 2002 , XT 2004 -2013, Outback 2005, 2007 -2009, Impreza 95-01, 95-96, Pin Type: Floating Piston. Manufacturer.

The density of titanium is significantly lower than that steel, while maintaining considerable strength, which means it lighter but the strength very similar.

part #: 9id50p price

  • $232.00

specifications pistonrinro:

  • for models: Sti, Impreza, Legacy
  • for makes: Subaru
  • brand: Maxpeedingrods
  • mpn: 9id50p
  • part type: Rod
  • big end diameter: 55mm/2.165
  • big end width: 21.38mm/0.840
  • california prop 65 warning: California Prop 65 Warning
  • country of origin: China
  • fit for: For Subaru Ej18 Ej20 Ej22 Ej25 Ej207 Ej257 Sti
  • fitment type: Performance/custom
  • fits: 02-05 For Subaru Impreza Sti Forester Legacy 2.0l Ej205
  • ipn: 02-05
  • material: Titanizing 4340 Aircraft Chrome Moly Quality Steel
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part
  • pin type: Bronzed Bushing Floating Pin
  • quality: Forged Rods With Tuv Certification
  • quantity: Set Of 4 Pieces
  • rod length: 130.5mm/5.137
  • small end diameter: 23mm/0.905
  • surface finish: Brand New
  • weight tolerance: Balanced To / 1 Gram In Set

seller pistonrinro:

  • city: Rowland height, California
  • rating: 99.8%
  • # reviews: 2041

general pistonrinro:

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

offer pistonrinro:

  • sold: 0
  • quantity: 1
  • best offers: True
  • availability: In Stock
  • options: Ship-to-home
  • started: May 18, 2026

returns pistonrinro:

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

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shipping pistonrinro:

  • transit: 3-5 Days
  • class: Standard
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery
  • type: Fixed
  • cost: $0.00
for models: sti, impreza, legacy, for makes: subaru, part type: rod, big end diameter: 55mm/2.165, big end width: 21.38mm/0.840, california prop 65 warning: california prop 65 warning, country of origin: china, fit for: for subaru ej18 ej20 ej22 ej25 ej207 ej257 sti, fitment type: performance/custom, fits: 02-05 for subaru impreza sti forester legacy 2.0l ej205, note: no instruction included, notice: this is aftermarket replcement part, pin type: bronzed bushing floating pin, quality: forged rods with tuv certification, quantity: set of 4 pieces, rod length: 130.5mm/5.137, small end diameter: 23mm/0.905, surface finish: brand new, weight tolerance: balanced to / 1 gram in set,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, material: titanizing 4340 aircraft chrome moly quality steel, sku: 13687702152613741,
Maxpeedingrods 9ID50P 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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