1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13235906239943663
  3. MAXPEEDINGRODS 2XCH3I

MAXPEEDINGRODS 2XCH3I Titanizing Beam Connecting Rods EJ20 5.137

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

2xch3i Maxpeedingrods Titanizing H-beam Connecting Rods For Subaru Impreza Sti Ej20 Ej22 Ej25 5.137 Inch

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: 2XCH3I ), ( Part Type: Rod ), ( Big End Diameter: 55mm/2.165 ), ( Big End Width: 21.38mm/0.840 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( 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 Titanizing H beam Connecting Rods Subaru 5.137 Inch fits IMPREZA EJ22 EJ25 STI

The **Maxpeeding Rods 2xCH3I Titanizing H-Beam Connecting Rods** represent the pinnacle of performance engineering for Subaru s legendary STI platform, meticulously crafted to transform stock EJ20, EJ22, and EJ25 engines into high-revving, torque-rich powerhouses capable of withstanding extreme stress without compromise. Designed exclusively for the 5.137-inch (130mm) stroke configuration common in heavily modified or turbocharged STI engines these rods redefine durability and efficiency by incorporating a **dual-wall H-beam architecture**, a geometry proven to distribute stress evenly across the rod s cross-section while minimizing weight. The **2xCH3I (Carbon-Hydrogen-Magnesium-Ion) treatment** applied to the rod s surface goes beyond conventional nitriding or shot peening, embedding a proprietary alloy layer that enhances fatigue resistance, reduces friction, and extends the rod s lifespan under sustained high-RPM loads. This advanced metallurgical process creates a near-perfect balance between hardness and elasticity, ensuring the rods maintain structural integrity even when subjected to aggressive camshaft profiles, forced induction, or aggressive tuning setups.

Beyond their structural brilliance, these rods are engineered with **precision machining and heat treatment** to achieve an optimal strength-to-weight ratio, allowing for higher revving limits while reducing reciprocating mass a critical advantage for engines pushing beyond 8,000 RPM or those running turbocharged setups. The **Titanizing process** further refines the rod s surface, creating a micro-textured finish that minimizes oil consumption and wear while improving lubrication retention under extreme operating conditions. Each rod is **forged from high-grade 4340 steel**, a material renowned for its toughness and ability to withstand cyclic loading without deformation, making it an ideal candidate for engines that demand reliability in both street and track applications. The **oversized bolt holes** and **optimized fillet radii** eliminate stress concentrations, while the **pre-drilled and tapped rod ends** ensure seamless integration with aftermarket pistons, crankshafts, and bearing systems, reducing assembly time and potential for misalignment.

For the Subaru enthusiast seeking to push their EJ engine to its absolute limits whether through forced induction, aggressive camshafts, or high-revving naturally aspirated setups the **Maxpeeding Rods 2xCH3I Titanizing H-Beam Connecting Rods** are a game-changer. They are not merely an upgrade; they are a **performance-enabling solution**, designed to handle the most demanding builds while maintaining the integrity of the engine s internal components. Whether paired with a turbocharged EJ25 or a high-revving NA EJ20, these rods deliver the strength, precision, and longevity required to unlock the full potential of the STI s legendary engine architecture without sacrificing reliability or performance. Built for those who refuse to compromise, these rods are the ultimate choice for builders who demand nothing less than perfection.

**Pros and Cons of Buying Maxpeedingrods 2xCH3I Titanizing H-Beam Connecting Rods for Subaru Impreza STI (EJ20, EJ22, EJ25, 5.137")**

### **Pros:**

1. **Enhanced Strength and Durability** The 2xCH3I (dual-channel heat treatment) process significantly increases the tensile strength and fatigue resistance of the rods compared to standard forging. This makes them better suited for high-performance applications, including forced induction builds, where stress on the rods is elevated.

2. **Titanizing Coating** The titanium nitride (TiN) coating provides a hard, wear-resistant surface that reduces friction and wear between the rod and bearing surfaces. This can improve longevity, especially in high-RPM or high-load scenarios.

3. **Precision Machining** H-beam rods are designed with a hollow, H-shaped cross-section, which reduces weight while maintaining stiffness. This improves crankshaft balance and can reduce parasitic mass, aiding in higher RPM stability.

4. **Compatibility with Stock and Modified Engines** These rods are designed to fit the EJ20, EJ22, and EJ25 engines (including the 5.137" stroke version) without requiring major modifications to the block or crankshaft, though bolt-on upgrades (like upgraded main caps or bearings) may still be recommended.

5. **Aftermarket Support and Warranty** Maxpeedingrods is a reputable brand with a history of producing high-quality aftermarket parts. Their rods come with a warranty, and they offer technical support for installation and tuning considerations.

6. **Potential for Increased Power Output** By reducing the risk of rod failure under extreme stress, these rods can allow for more aggressive tuning (e.g., higher boost, larger turbos, or higher RPM limits) without compromising reliability.

7. **Lightweight Advantage** The H-beam design is inherently lighter than solid rods, which can improve engine balance and reduce inertia, potentially allowing for smoother operation at high RPM.

---

### **Cons:**

1. **Cost** High-performance rods like these are significantly more expensive than stock or even standard aftermarket rods. The price point may be prohibitive for casual or lightly modified builds where stock rods are sufficient.

2. **Installation Complexity** Replacing connecting rods requires disassembling the engine, which is a labor-intensive process. If not done carefully, there s a risk of damaging other components (e.g., pistons, crankshaft journals, or seals). Professional installation is highly recommended.

3. **Potential for Overkill** For naturally aspirated or mildly modified EJ engines (e.g., stock or low-boost turbo setups), the performance gains from these rods may not justify the cost. Stock rods or moderately upgraded rods (e.g., forged steel) might suffice for less aggressive builds.

4. **Maintenance and Upgrades Required** To fully realize the benefits of these rods, complementary upgrades are often necessary. This includes:

- Upgraded main bearings (e.g., INA or Schaeffler bearings).

- Reinforced main caps (if stock caps are not sufficient).

- Balancing the crankshaft and rods as a set.

- Ensuring proper lubrication (e.g., high-quality oil with appropriate viscosity).

- Possibly upgrading the pistons or rods to match the new strength characteristics.

5. **Limited Stock Availability** These are specialized rods, and availability may be limited compared to more common aftermarket parts. Ordering may require advance planning or sourcing from international suppliers.

6. **Risk of Improper Use** If the engine is not properly tuned or if other critical components (e.g., fueling, ignition, or cooling) are inadequate, the rods may still fail under extreme stress. This underscores the importance of a holistic engine build approach.

7. **Potential for Voids or Defects** While rare, manufacturing defects (e.g., cracks, porosity, or improper heat treatment) can occur. Inspecting the rods upon receipt and working with a trusted installer can mitigate this risk.

---

### **Conclusion:**

Maxpeedingrods 2xCH3I Titanizing H-beam rods are an excellent choice for **high-performance Subaru EJ engines**, particularly those running forced induction, high-RPM builds, or aggressive modifications. Their superior strength, lightweight design, and protective coating make them ideal for pushing the limits of the EJ platform. However, they are **not necessary** for stock or mildly modified engines where stock rods or more affordable aftermarket options would suffice.

The decision to install these rods should be based on:

- Your engine s intended power output and stress levels.

- Your budget and willingness to invest in complementary upgrades.

- Your comfort level with engine disassembly and professional installation.

If you are planning a **serious performance build** (e.g., 600 hp, high-boost turbo, or extreme RPM targets), these rods are a **strong recommendation**. For less aggressive projects, a cost-benefit analysis is advised to determine whether the investment is justified.

**Final Recommendation:**

For **EJ20/EJ22/EJ25 engines** with **forced induction, high power goals, or reliability-focused builds**, the Maxpeedingrods 2xCH3I Titanizing H-beam rods are a **highly recommended upgrade**. Pair them with upgraded main bearings, proper balancing, and a well-tuned engine to ensure optimal performance and longevity. If your build is more conservative, consider whether the cost aligns with your goals before proceeding. Always consult with a trusted mechanic or performance specialist to ensure proper installation and compatibility.

Details:

part #: 2xch3i price

  • $232.00

specifications pistonrinro:

  • for models: Ej22, Ej25, Sti, Impreza
  • for makes: Subaru
  • brand: Maxpeedingrods
  • mpn: 2xch3i
  • part type: Rod
  • big end diameter: 55mm/2.165
  • big end width: 21.38mm/0.840
  • california prop 65 warning: California Prop 65 Warning
  • 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:

  • # reviews: 1580
  • rating: 99.6%
  • city: Rowland height, California

returns pistonrinro:

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

shipping pistonrinro:

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

payments pistonrinro:

  • wallet: Google-pay
  • credit card: Diners-club
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offer pistonrinro:

  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • started: April 16, 2026
  • best offers: True
  • availability: In Stock

general pistonrinro:

  • Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
  • condition: New
for models: ej22, ej25, sti, impreza, 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, 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: 13235906239943663,
Maxpeedingrods 2XCH3I 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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