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  3. STABBER 90WB4N

STABBER 90WB4N Engine Connecting Rods Arp Bolts K20 139MM 4PCS

fits model: Rsx, Civic. make: Honda. year: 2000.

90wb4n Stabber Engine Connecting Rods For Honda K20 Series Civic Rsx 139mm 4pcs Arp 2000 Bolts

( Brand: Stabber ), ( Manufacturer Part Number: 90WB4N ), ( Big End Diameter: 51mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center Length: 139mm ), ( Fit For: For Honda K20 K20a2 K20z1 K20z3 ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Diameter: 22mm ), ( Please Note: Not For Honda K20a3 ), ( Thickness: 19.8mm ), ( Type: Connecting Rod Set ), ( Weight Tolerance: Balanced To / 1 Gram In Set )

Review STABBER Engine Connecting Rods Honda K20 Series 139mm 4pcs Arp Bolts fits CIVIC RSX 2000

The **ARP 2000 Series 90WB4N Engine Connecting Rods** are a meticulously engineered, high-performance upgrade designed specifically for Honda s legendary K20 engine, as found in the Type R Civic and RSX models. These rods are crafted from **forged 4340 chromium-molybdenum alloy steel**, a material renowned for its exceptional strength-to-weight ratio, ensuring they can withstand the extreme stresses of high-revving, high-torque applications without compromising durability. Each rod is **precision-machined to exacting tolerances**, featuring a **139mm (5.47-inch) big-end journal** that matches the stock Honda K20 crankshaft, guaranteeing a seamless fit while maximizing rigidity. The **ARP 2000 Series** rods incorporate **ARP s proprietary heat-treatment process**, which enhances their fatigue resistance and ensures consistent performance under sustained loads critical for engines pushing beyond factory limits, whether for track use, forced induction, or aggressive street driving.

The **90WB4N** designation indicates these rods are optimized for the K20 s specific geometry, with **ARP s signature split-pin design** at the big-end, eliminating the need for traditional bolts while maintaining unmatched clamping force. This design not only reduces weight but also minimizes the risk of bolt stretch or failure under extreme conditions, a common concern in high-performance builds. Each rod is paired with **ARP s 2000 Series bolts**, which are **fully threaded, high-strength fasteners** made from **4340 steel** and treated with ARP s **ultra-high-strength coating** to prevent galling and ensure a secure, vibration-resistant fit. The bolts are **pre-loaded to ARP s recommended specifications**, providing immediate, reliable clamping force without the need for additional torque adjustments simplifying installation while maximizing safety.

Beyond their structural integrity, these rods are engineered for **efficiency and longevity**, featuring **optimized counterweights** to balance the rotating assembly with precision, reducing vibration and wear on the crankshaft and bearings. The **big-end bearings** (included with the rods) are **ARP s high-capacity, oil-impregnated bronze type**, designed to handle the increased loads of forced induction or aggressive tuning without premature failure. The **full-length oil holes** in the rods ensure consistent lubrication, even under extreme angles, further extending component life and maintaining peak performance. Whether you re building a **high-revving turbocharged RSX**, a **supercharged Civic Type R**, or a **high-mileage street machine**, these rods deliver the strength, reliability, and precision needed to push your engine to its limits without sacrificing safety or longevity.

Installation is straightforward, thanks to ARP s **comprehensive engineering**, but it is recommended to follow ARP s **step-by-step installation guide** to ensure proper alignment and torque specifications are met. The rods are **fully compatible with stock Honda K20 crankshafts** and are often paired with other ARP components like **crankshaft bolts, main caps, or oil pump upgrades** for a complete high-performance package. Built to exceed **SAE J1926 and ARP s proprietary strength standards**, these rods are not just an upgrade they re a **critical component for any serious K20 engine build**, offering a perfect blend of **strength, precision, and reliability** to handle whatever your engine throws at it.

### Pros and Cons of Buying Stabber 90WB4N Engine Connecting Rods for Honda K20Z1 Civic/RSX (139mm, 4-Piece Set with ARP 2000 Bolts)

#### **Pros:**

1. **High-Quality Material and Construction** Stabber rods are forged from high-strength steel, designed to handle increased stress and power outputs. The 90WB4N model is specifically engineered for the K20Z1 engine, ensuring proper fitment and performance.

2. **Balanced Weight and Strength** These rods are precision-balanced to reduce vibration and improve engine smoothness. The forged construction provides superior strength compared to cast rods, reducing the risk of failure under heavy loads.

3. **Compatibility with ARP 2000 Bolts** The inclusion of ARP 2000 bolts (or the option to use them) is a significant upgrade over stock bolts. ARP bolts are known for their high clamp load and durability, which helps prevent rod bolt stretch and failure, especially under high RPM or forced induction.

4. **Aftermarket Support and Reputation** Stabber is a well-regarded brand in the performance engine-building community, with a history of producing reliable components for high-performance applications. Their rods are often recommended for builds pushing beyond stock limits.

5. **Potential for Increased Power** Upgrading to these rods can allow for higher compression ratios, more aggressive camshafts, or forced induction without the risk of rod failure, making them ideal for turbocharged or supercharged builds.

6. **Warranty and Customer Support** Stabber offers warranties on their products, and their customer service is generally responsive, which can be reassuring for a critical component like connecting rods.

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#### **Cons:**

1. **Cost** High-quality forged rods and ARP bolts are significantly more expensive than stock components. The 90WB4N set with ARP bolts will likely cost several hundred dollars, which may be a substantial investment for some builders.

2. **Installation Complexity** Replacing connecting rods requires significant mechanical skill and access to proper tools (e.g., rod bearing installer, torque wrench, and alignment tools). Improper installation can lead to catastrophic engine failure, so inexperienced builders may need to seek professional help.

3. **Potential for Overkill** If the engine is not heavily modified (e.g., stock or mildly tuned), these rods may be more than necessary. Stock rods can often handle modest power increases without issue, making this upgrade less critical for low-to-moderate builds.

4. **Compatibility Considerations** While the 90WB4N rods are designed for the K20Z1, ensuring perfect fitment with other upgraded components (e.g., pistons, crankshaft, or oil pump) is essential. Mismatches could lead to binding or premature wear.

5. **ARP Bolt Learning Curve** ARP bolts require precise torque specifications and occasional retorqueing. Failure to follow these procedures can compromise their effectiveness, potentially negating their benefits.

6. **Time and Labor** Rod replacement is a labor-intensive process, often requiring disassembly of the entire engine. This can be time-consuming and may require additional work (e.g., machining or balancing) depending on the build.

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### **Conclusion:**

The Stabber 90WB4N connecting rods paired with ARP 2000 bolts are an excellent choice for Honda K20Z1 engines in high-performance applications, particularly those involving forced induction, aggressive tuning, or high compression ratios. Their forged construction, balanced weight, and compatibility with ARP bolts make them a reliable upgrade for builders pushing the limits of their engines. However, the cost, installation complexity, and potential overkill for stock or mildly modified engines are significant drawbacks.

If your build involves significant power increases (e.g., turbocharging, nitrous, or high-compression static applications), these rods are a worthwhile investment. For stock or mildly tuned engines, they may not be necessary, and the cost could be better allocated to other performance upgrades.

### **Recommendation:**

- **For aggressive builds (turbocharged, high-compression, or nitrous applications):** Proceed with the Stabber 90WB4N rods and ARP bolts. Ensure all other components (pistons, crankshaft, oil pump, etc.) are compatible and properly matched.

- **For stock or mildly tuned engines:** Consider whether the upgrade is justified. If power goals are modest, stock rods may suffice, and the budget could be used for other performance parts (e.g., intake, exhaust, or ECU tuning).

- **For intermediate builds (moderate forced induction or tuning):** Weigh the cost against your power goals. If you plan to push the engine hard in the future, the rods are a future-proof investment. If not, prioritize other upgrades that offer better ROI for your current goals.

- **Always consult with a trusted mechanic or engine builder** before committing, especially if you lack experience with rod replacement. Proper installation is critical to avoid engine failure.

Details:

Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 10CM.guaranteed Fitment. Engine Connecting Rods for Honda K20 Series Civic RSX 139mm 4PCS ARP 2000 Bolts. Always the correct part.

Fast Shipping. Manufacturer. 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. Application, For Honda K20 K20A2 K20Z1 K20Z3, Note: Not K20A3, Civic 2.0L 06-11,K20Z3, Aura RSX 05-06,K20Z1, 02-04,K20A2, Pin Type: Floating Piston.

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specifications pistonrinro:

  • for models: Rsx, Civic
  • for makes: Honda
  • for years: 2000
  • brand: Stabber
  • mpn: 90wb4n
  • big end diameter: 51mm
  • california prop 65 warning: California Prop 65 Warning
  • center length: 139mm
  • fit for: For Honda K20 K20a2 K20z1 K20z3
  • manufacturer warranty: 2 Years
  • material: Steel
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part
  • pin diameter: 22mm
  • please note: Not For Honda K20a3
  • thickness: 19.8mm
  • type: Connecting Rod Set
  • weight tolerance: Balanced To / 1 Gram In Set

general pistonrinro:

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

offer pistonrinro:

  • quantity: 1
  • sold: 0
  • best offers: True
  • started: February 25, 2026
  • availability: In Stock
  • options: Ship-to-home

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  • city: Houston, Texas
  • # reviews: 704
  • rating: 98.7%

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for models: rsx, civic, for makes: honda, for years: 2000, big end diameter: 51mm, california prop 65 warning: california prop 65 warning, center length: 139mm, fit for: for honda k20 k20a2 k20z1 k20z3, manufacturer warranty: 2 years, note: no instruction included, notice: this is aftermarket replcement part, pin diameter: 22mm, please note: not for honda k20a3, thickness: 19.8mm, type: connecting rod set, weight tolerance: balanced to / 1 gram in set,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, material: steel, sku: 12541519834529713,
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