YAMAHA 4V2-22110-00-35 Rear Swing Armarm Pivot Arm Swingarm Suspension SW32E

( Manufacturer Part Number: 4V2-22110-00-35 ), ( Part Type: Swing Arm Suspension ), ( Machine Type: Off-road Motorcycle ), ( Material: Aluminum ), ( Universal Fitment: No ), ( Placement On Vehicle: Rear )

Review YAMAHA Rear Swingarm Pivot Swing Arm Suspension fits YZ125 YZ125H 1981

The **Yamaha 4V2-22110-00-35** is a meticulously engineered rear swingarm pivot assembly for the classic **1981 Yamaha YZ125/YZ125H**, designed to restore or enhance the performance and reliability of this iconic off-road motorcycle. Crafted from high-quality, heat-treated steel, this **SW32E** swingarm pivot is built to withstand the rigors of aggressive trail riding, ensuring durability while maintaining the original aesthetic and functionality of the YZ125 s legendary suspension system. The pivot incorporates a **precision-machined, reinforced design**, featuring a robust **spherical bearing** at the rear pivot point to minimize friction and wear, allowing for smoother articulation and improved handling under heavy loads or rough terrain. This component is a direct replacement for the stock swingarm, maintaining the exact same mounting dimensions and alignment, so it integrates seamlessly with the YZ125 s frame and suspension linkage without requiring modifications. Whether you're restoring a vintage YZ125 to its former glory or upgrading an existing bike for better durability, this swingarm pivot is a critical upgrade that ensures long-term reliability while preserving the bike s classic performance characteristics. Built to Yamaha s exacting standards, it s an essential part for riders who demand both authenticity and performance in their off-road adventures.

### **Analysis of the Yamaha 4V2-22110-00-35 (1981 YZ125/YZ125H Rear Swingarm Pivot/Swing Arm Suspension SW32E)**

This part is a **rear swingarm pivot and suspension assembly** for the 1981 Yamaha YZ125/YZ125H, specifically the **SW32E** model. Below is a detailed breakdown of its pros, cons, and a final recommendation.

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### **Pros**

1. **Original Equipment Quality**

The part is a direct replacement for the factory swingarm assembly on the 1981 YZ125/YZ125H, meaning it was designed to fit perfectly without modifications. Yamaha s manufacturing standards in the early 1980s were strong, ensuring durability and reliability.

2. **Complete Assembly**

Unlike aftermarket parts that may require additional components, this is a **full swingarm assembly**, including the pivot, suspension linkage, and mounting points. This simplifies installation and reduces the risk of mismatched parts.

3. **Proven Performance**

The YZ125 was a well-regarded dirt bike in its time, and its suspension geometry was optimized for handling and rider comfort. Using an original or high-quality replacement ensures that the bike retains its intended performance characteristics.

4. **Compatibility with Stock Components**

Since this part is designed for the 1981 model, it will work seamlessly with the stock suspension (SW32E), shock, and other rear-end components. This avoids potential compatibility issues that can arise with aftermarket parts.

5. **Resale Value Preservation**

If you plan to sell the bike later, keeping original or OEM-quality parts can help maintain its value, especially among collectors or enthusiasts who prefer unmodified bikes.

6. **Durability of Materials**

The swingarm is likely made from **chrome-molybdenum steel**, a material known for its strength and resistance to fatigue. This makes it less prone to bending or breaking under normal riding conditions.

7. **Ease of Maintenance**

Being a stock part, it follows Yamaha s original design, meaning maintenance procedures (such as lubrication, bolt torque specifications, and adjustment methods) are well-documented and straightforward.

---

### **Cons**

1. **Age-Related Wear**

The part is **over 40 years old**, meaning it may have been stored in less-than-ideal conditions (e.g., rust, dry rot, or degraded rubber components). Even if it appears intact, it may require inspection for cracks, corrosion, or worn bushings.

2. **Potential for Rust or Corrosion**

Early Yamaha parts, especially those exposed to moisture, can develop rust. The swingarm pivot and suspension linkage may have hidden corrosion that weakens structural integrity. A thorough cleaning and inspection are necessary before installation.

3. **Limited Availability of Spare Parts**

While the swingarm itself may be available, **smaller components like bushings, pins, or seals** may be harder to find. If these wear out, sourcing replacements could be difficult or expensive.

4. **No Modern Upgrades**

The suspension geometry of the 1981 YZ125 is **outdated by modern standards**. The swingarm and suspension setup are not optimized for today s riding techniques, heavier riders, or aggressive off-road use. If you plan to modify the bike for performance, you may need to replace it with an aftermarket or newer model part.

5. **Potential for Misalignment**

If the swingarm was removed and reinstalled improperly, it could lead to **uneven tire wear, handling issues, or premature wear on the suspension**. This requires careful alignment during installation.

6. **Cost vs. Aftermarket Alternatives**

While this is a **direct replacement**, aftermarket swingarms (e.g., from manufacturers like **Yamaha Performance Parts, Pro Circuit, or Race Tech**) may offer **lightweighting, improved geometry, or better materials** at a comparable price. However, these come with their own trade-offs (e.g., warranty, fitment guarantees).

7. **Suspension Adjustability Limitations**

The **SW32E suspension** is a basic coil-over design with limited adjustability compared to modern systems. If you need fine-tuned suspension tuning, you may need to upgrade the entire rear end.

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### **Conclusion**

- **Prioritize authenticity** and want to keep your 1981 YZ125/YZ125H in stock condition.

- **Have no plans for major modifications** and are satisfied with the bike s original handling characteristics.

- **Are willing to inspect and maintain** the part thoroughly to ensure it is free from rust or damage.

- **Prefer simplicity** and don t need the latest suspension technology.

- **Plan to ride aggressively** or modify the bike, consider an **aftermarket swingarm** for improved durability and performance.

- **Want modern suspension adjustability**, you may need to upgrade the entire rear end.

- **Are concerned about rust or wear**, a **new or rebuilt swingarm** (from a reputable supplier) could be a safer long-term investment.

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### **Final Recommendation**

- **Proceed with the purchase**, but **inspect it thoroughly** for rust, cracks, or worn bushings.

- **Clean and treat for rust** before installation.

- **Consider pairing it with a rebuilt suspension** (SW32E) if the original is degraded.

- **Keep spare bushings/pins** on hand for future maintenance.

- **Explore aftermarket alternatives** (e.g., **Yamaha Performance Parts swingarm** or **lightweight aftermarket options**) for better durability and adjustability.

- **Evaluate whether upgrading the suspension** (e.g., to a modern coil-over or progressive-link system) is worth the cost.

- **Test ride the bike** before committing if possible, to ensure the swingarm and suspension still meet your riding needs.

- **Get a professional inspection** before purchasing to confirm there are no hidden issues.

- **Compare prices** with other swingarm options (new, used, or rebuilt) to ensure you re getting a fair deal.

- **For a stock bike:** The **Yamaha OEM swingarm** is a fine choice if you ensure it s in good condition.

- **For performance or longevity:** An **aftermarket swingarm with modern materials** may be worth the investment.

Would you like guidance on where to source this part or how to inspect it for quality?

Details:

Large items may incur shipping costs. Unit is in good condition. 1981 Yamaha YZ125 YZ125H Rear Swing arm Pivot Swing Arm SuspensionSW32E Limited OFFER High Quality Best Offers Fast Shipping for a dirt bike. Limited 1981 Yamaha YZ125 YZ125H Rear Swing arm Pivot Swing Arm SuspensionSW32E OFFER for a dirt bike.

Fast Shipping Best Offers High Quality Swing arm for a Yamaha YZ125 dirt bike. Buyer pays all shipping costs.

part #: 4v2221100035 prices

• $29.95-$99.95

specifications mocycfra:

• for models: Yz125, Yz125h
• for makes: Yamaha
• for years: 1981
• mpn: 4v2-22110-00-35
• part type: Swing Arm Suspension
• machine type: Off-road Motorcycle
• material: Aluminum
• universal fitment: No
• placement on vehicle: Rear

seller mocycfra:

• rating: 99.6%
• city: Aurora, Nebraska
• # reviews: 7348

shipping mocycfra:

• carrier: USPS
• cost: $24.68
• type: Calculated
• class: Standard
• service: USPS Ground Advantage
• transit: 4-9 Days

general mocycfra:

• Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts
• condition: Used

payments mocycfra:

• credit card: Discover
• other
• wallet: Google-pay

returns mocycfra:

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

offer mocycfra:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: March 29, 2026
• best offers: True
• quantity: 1

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