YAMAHA 2VN-Y113F-00-00 Upper Exhaust Power Valve Flap Drum 88-91

( Manufacturer Part Number: 2VN-Y113F-00-00 ), ( Type: Engine Power Valve Bike ), ( Country Of Origin: Japan )

Review YAMAHA Upper Exhaust Power Valve Flap Drum Genuine Oem 88-91 fits YZ125 1989

The **Yamaha YZ125 Upper Exhaust Power Valve Flap Drum (88-91 model years, part number 2VN-Y113F-00-00, 1989)** is a meticulously engineered component designed to enhance the performance and reliability of Yamaha s iconic YZ125 dirt bike, particularly those produced between 1988 and 1991. This critical exhaust system part plays a pivotal role in regulating the flow of exhaust gases, directly influencing the bike s power delivery, throttle response, and overall engine efficiency. Crafted from high-quality materials, the flap drum is engineered to withstand the intense heat and pressure generated during high-performance riding, ensuring durability and longevity even under demanding conditions. Its precise design features a robust, heat-resistant construction that maintains structural integrity while allowing for optimal exhaust gas expulsion, which is essential for maintaining peak engine performance and preventing backpressure buildup. The flap drum operates in tandem with the power valve assembly, dynamically adjusting exhaust flow to optimize power output across a wide range of RPMs, from low-end torque to high-revving performance. This component is particularly sought after by enthusiasts and mechanics looking to restore or upgrade their YZ125 s exhaust system, as it is a common wear item that may degrade over time due to exposure to extreme temperatures and mechanical stress. Replacing a worn or damaged flap drum with an authentic Yamaha part ensures that the bike retains its factory-intended performance characteristics, including improved acceleration, smoother power delivery, and reduced exhaust noise key factors for both competitive riders and casual off-road enthusiasts. Whether used in a complete exhaust rebuild or as part of a targeted restoration project, this part exemplifies Yamaha s commitment to precision engineering and reliability, making it an indispensable component for maintaining the legendary performance of the YZ125 series.

**Pros and Cons of buying a Yamaha 2VN-Y113F-00-00 (1989 YZ125 Upper Exhaust Power Valve Flap Drum, 88-91 Model)**

### **Pros**

1. **Authentic Restoration or Replacement Part** This is an original Yamaha OEM part, ensuring a perfect fit for 1988-1991 YZ125 models. It eliminates the risk of compatibility issues that can arise with aftermarket parts.

2. **Improved Performance** The power valve flap drum is a critical component in the exhaust system, influencing engine efficiency and power delivery. A properly functioning or restored part can enhance throttle response and overall engine performance.

3. **Aesthetic and Historical Value** For collectors or enthusiasts, owning an original or restored part from this era adds authenticity to a project bike. It preserves the bike s vintage character, which can be appealing to purists.

4. **Potential for Increased Resale Value** If the bike is restored or maintained with genuine parts, it may retain or even gain value in the collector market, especially if the YZ125 is a sought-after model.

5. **Durability** Yamaha s components from this era were built to last, and with proper care, this part could remain functional for decades, reducing long-term maintenance costs.

6. **Easier Maintenance** Since it s an OEM part, finding replacement seals, gaskets, or related components may be simpler than with non-standard aftermarket alternatives.

### **Cons**

1. **Age and Wear** The part is from the late 1980s, meaning it may show signs of wear, corrosion, or degradation. If not properly cleaned or restored, it could fail prematurely or require additional work to function correctly.

2. **Limited Availability** Original Yamaha parts from this era are becoming increasingly rare. Sourcing one may require searching through salvage yards, online marketplaces, or contacting specialty Yamaha part suppliers, which could take time and effort.

3. **Cost Relative to Aftermarket Alternatives** While not excessively expensive, the price of an original part may be higher than a modern aftermarket replica, especially if the aftermarket option offers similar performance at a lower cost.

4. **Potential for Hidden Damage** Without a thorough inspection, the part could have internal damage (e.g., cracked housing, worn seals, or bent components) that isn t immediately visible. This could lead to further repairs or replacements down the line.

5. **Restoration Required** If the part is used, it may need cleaning, machining, or reconditioning to function properly. This adds labor and potential expense, especially if the buyer lacks mechanical experience.

6. **Market Saturation** The YZ125 is a common model, and while parts are available, the competition for original components can drive up prices or lead to counterfeit or mismatched parts if caution isn t exercised.

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### **Conclusion**

- You prioritize **authenticity and historical accuracy** for a restoration project.

- You re willing to invest time in **inspecting, cleaning, or restoring** the part to ensure reliability.

- You have access to **reputable sources** to verify its condition and avoid counterfeit or damaged items.

- You re okay with potentially **higher costs or limited availability** compared to aftermarket options.

However, if your primary goal is **performance or cost efficiency**, an aftermarket equivalent (if available) might be a more practical choice. The part s value lies in its **originality and fitment**, but its condition and the effort required to prepare it will determine whether it s a worthwhile purchase.

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### **Recommendation**

1. **Verify the Part s Condition** Inspect it closely for cracks, corrosion, or wear. If possible, have a mechanic or Yamaha specialist assess it before purchasing.

2. **Check for Alternatives** Compare prices with aftermarket options (e.g., from brands like **Yamaha Performance Parts, PowerSports Parts, or eBay sellers with verified feedback**).

3. **Source from Trusted Vendors** Buy from reputable dealers, salvage yards with good reputations, or online marketplaces where sellers provide detailed photos and descriptions.

4. **Budget for Restoration** If the part needs cleaning or machining, factor in labor costs or tools required to prepare it.

5. **Consider Your Project Goals** If this is for a **daily rider**, an aftermarket part may suffice. If it s for a **show bike or collector s project**, the original part adds significant value.

**Final Verdict:** This is a **good purchase for enthusiasts and restorers** who value original components, but buyers should proceed with caution regarding condition and sourcing. For performance-focused riders, weigh the pros and cons carefully against aftermarket alternatives.

Details:

part #: 2vny113f0000 prices

• $39.99-$209.99

specifications valvemotorcycleaz:

• for models: Yz125
• for makes: Yamaha
• for years: 1989
• mpn: 2vn-y113f-00-00
• type: Engine Power Valve Bike
• country of origin: Japan

returns valvemotorcycleaz:

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

payments valvemotorcycleaz:

• wallet: Paypal
• other
• credit card: Visa

shipping valvemotorcycleaz:

• transit: 3-8 Days
• type: Fixed
• class: Standard
• cost: $7.99
• service: USPS Ground Advantage
• carrier: USPS

general valvemotorcycleaz:

• Engines Engine Parts > Valvetrain Components > Engine Valves
• condition: Used

offer valvemotorcycleaz:

• quantity: 1
• options: Ship-to-home
• sold: 0
• started: April 28, 2026
• availability: In Stock

seller valvemotorcycleaz:

• # reviews: 37863
• city: Lake Havasu City, Arizona
• rating: 99.8%

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