fits model: Xt-350, Xt-250. make: Yamaha. year: 1984.

( Manufacturer Part Number: 3Y0-21611-00-00 ), ( Part Type: Fender ), ( Country Of Origin: Japan )
The **Yamaha 42U-21611-00-00 rear fender** is a meticulously crafted, high-performance aftermarket component designed exclusively for Yamaha s classic XT-350 and XT-250 adventure bikes produced between the model years **1983 and 1991**. This fender is not merely a functional accessory but a precision-engineered upgrade that enhances both the aesthetic and practical aspects of your motorcycle. Crafted from durable, lightweight materials, the fender features a sleek, aerodynamic design that seamlessly integrates with the original contours of your bike s frame, ensuring a clean, factory-inspired look without the bulk or stiffness of aftermarket alternatives. The construction prioritizes both strength and flexibility, allowing it to withstand the rigors of off-road riding while maintaining its shape under heavy loads, such as when carrying luggage or encountering rough terrain. The fender s **83-91 3Y0-21611-00-00** compatibility ensures a perfect fit for the XT-350 and XT-250, with precise alignment for the rear wheel and suspension, eliminating gaps or misalignments that could lead to premature wear or reduced performance. Whether you re tackling winding mountain trails, cruising through urban landscapes, or simply seeking to restore your bike s original styling, this fender delivers a blend of form and function that elevates the riding experience. Its **black powder-coated finish** resists corrosion and fading, ensuring longevity even in harsh weather conditions, while its ergonomic shape minimizes wind interference, contributing to a more stable and comfortable ride. For riders who demand both authenticity and performance, the **Yamaha 42U-21611-00-00 rear fender** stands as an ideal choice combining the reliability of an OEM-quality part with the versatility of a well-crafted upgrade.
### **Pros and Cons of buying a Yamaha 3Y0-21611-00-00 (83-91 XT-350 / 84 XT-250 Rear Fender) and 42U-21611-00-00**
#### **Overview**
The **Yamaha 3Y0-21611-00-00** is a rear fender for the **XT-350 (1983 1991) and XT-250 (1984)**, while the **42U-21611-00-00** is a matching rear fender for the **XT-350 (1983 1991)**. These parts are essential for restoring or maintaining the original look of these classic adventure bikes. Below is a detailed breakdown of their advantages and disadvantages.
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### **Pros**
1. **Authentic Fit and Finish**
- Both parts are **OEM (Original Equipment Manufacturer) replacements**, meaning they match the original design, materials, and styling of the XT-350 and XT-250.
- The **3Y0-21611-00-00** and **42U-21611-00-00** are designed to fit seamlessly with the bike s frame, ensuring proper alignment and functionality.
- The **chrome finish** on the 42U model adds a classic, high-end look that enhances the bike s vintage appeal.
2. **Durability and Longevity**
- Yamaha fenders are built to last, especially when made from **steel or high-quality aluminum** (depending on the model).
- Properly installed, these fenders will resist rust and wear better than aftermarket alternatives, particularly if the bike is ridden in wet or off-road conditions.
- The **reinforced mounting points** help prevent sagging or detachment over time.
3. **Compatibility with Restoration Projects**
- If you re restoring an **XT-350 or XT-250**, these fenders ensure **historical accuracy**, which is crucial for show bikes or collectors.
- They integrate well with other OEM parts, maintaining the bike s original character without the need for extensive modifications.
4. **Ease of Installation**
- Both fenders are **relatively straightforward to install**, requiring basic tools and mechanical knowledge.
- The **bolt-on design** means no welding or extensive fabrication is needed, making them accessible for DIY enthusiasts.
- Yamaha provides **clear mounting instructions**, reducing the risk of installation errors.
5. **Resale Value Preservation**
- Keeping OEM fenders helps maintain the bike s **original condition**, which is beneficial if you plan to sell it in the future.
- Collectors and purists often **prefer fully restored OEM bikes**, making these parts a wise investment for long-term value.
6. **Protection Against Elements**
- Fenders serve a **practical purpose** by shielding the rider and rear tire from mud, water, and debris, improving comfort and reducing maintenance needs.
- The **slightly angled design** of the XT fenders helps direct water away from critical components.
7. **Availability of Replacement Parts**
- While Yamaha no longer produces these models, **aftermarket suppliers and specialty shops** still carry these parts, ensuring long-term availability.
- The **part numbers (3Y0-21611-00-00 and 42U-21611-00-00)** are widely recognized, making sourcing easier than for rare aftermarket alternatives.
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### **Cons**
1. **Cost Compared to Aftermarket Options**
- OEM fenders can be **more expensive** than aftermarket alternatives, which may offer similar functionality at a lower price.
- Prices vary depending on condition (new vs. used) and supplier, but they generally range from **$100 $250** for a single fender, making a pair a significant investment.
2. **Potential for Rust or Damage in Used Parts**
- If purchasing **used or salvage parts**, there is a risk of **hidden rust, dents, or wear** that may compromise structural integrity.
- Inspecting used fenders thoroughly is essential to avoid hidden defects that could lead to premature failure.
3. **Limited Customization**
- Unlike aftermarket fenders, these parts **do not offer design variations** (e.g., different colors, shapes, or materials).
- If you want a **modern or aggressive look**, you may need to explore aftermarket options, which could void restoration authenticity.
4. **Weight Considerations**
- Steel fenders (common in older Yamaha models) are **heavier** than modern aluminum or composite alternatives.
- While not a major issue for these bikes, the added weight may slightly affect handling in extreme off-road conditions.
5. **Availability Challenges for Rare Models**
- While not extremely rare, **supply can be inconsistent**, especially for the **XT-250 (84 model)**.
- Some sellers may charge premium prices due to limited stock, requiring patience or multiple sources to find the right part.
6. **Potential for Mismatched Parts in Restorations**
- If restoring a bike with mixed OEM and aftermarket parts, **fender mismatches** (e.g., chrome vs. painted) can detract from the overall appearance.
- Ensuring consistency in materials and finishes may require additional effort or budget.
7. **Installation Risks if Improperly Done**
- While installation is manageable, **incorrect mounting** (e.g., loose bolts, misaligned brackets) can lead to **sagging, rattling, or detachment** while riding.
- Cutting corners during installation could void warranties (if applicable) and compromise safety.
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### **Conclusion**
The **Yamaha 3Y0-21611-00-00 (for XT-350/XT-250) and 42U-21611-00-00 (XT-350)** are **high-quality, authentic replacements** that offer both **practical and aesthetic benefits** for owners of these classic adventure bikes. Their **durability, historical accuracy, and ease of installation** make them ideal for **restorations, maintenance, and preservation of resale value**.
However, the **higher cost compared to aftermarket options** and the **potential for rust or mismatches in used parts** are drawbacks to consider. If **authenticity and long-term reliability** are priorities, these fenders are a **strong recommendation**. If budget or customization is a concern, exploring **aftermarket alternatives** (while sacrificing some originality) may be worth evaluating.
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### **Final Recommendation**
**Buy these fenders if:**- You are **restoring an XT-350 (83 91) or XT-250 (84)** and prioritize **historical accuracy**.
- You want **OEM-quality parts** that match the bike s original design and improve its value.
- You are **comfortable with a slightly higher upfront cost** in exchange for durability and authenticity.
- You plan to **keep the bike in show condition** or sell it in the future without modifications.
**Consider aftermarket alternatives if:**- You are on a **tight budget** and can find a **reliable, well-reviewed aftermarket fender** at a lower price.
- You want **customization options** (e.g., different materials, colors, or designs).
- You are **not concerned with strict OEM authenticity** and prefer modern materials for weight savings.
For most **XT-350/XT-250 enthusiasts**, the **3Y0-21611-00-00 and 42U-21611-00-00 fenders** are a **worthwhile investment** that enhances both function and aesthetics while maintaining the bike s legacy. Always **inspect used parts carefully** and **follow installation guidelines** to ensure longevity.
84 Yamaha XT-250. My and part number is to the best of my ability. Sometimes mistakes are made. 83-91 Yamaha XT-250,xt-350 rear fender, oem, 42U-21611-00- good usable.
Has scratches. Will fit 83,84,85,86,87,88,89,90,91,92,93 Yamaha XT-350. I can guarantee that the part I ship out is in picture.