KAWASAKI 13107-1405 Gear Shaft Exhaust Power Valve Cylinder Engine

( Manufacturer Part Number: 13107-1405 ), ( Part Type: Valve ), ( Vintage Part: No ), ( Location: Boring Bar, Mailer Kawasaki 1999 Kx250 )

Review KAWASAKI Gear Shaft Exhaust Power Valve Cylinder Engine Oem fits KX250 KX 250 1999

The **Kawasaki 13107-1405 Gear Shaft Exhaust Power Valve** is a precision-engineered component designed exclusively for the **1999 Kawasaki KX250**, a high-performance dirt bike renowned for its agile handling and powerful 250cc single-cylinder engine. This critical part plays a pivotal role in optimizing exhaust flow, directly influencing engine efficiency, throttle response, and overall power delivery. Crafted from high-grade materials, the power valve is engineered to regulate exhaust gas expulsion with exceptional precision, ensuring minimal backpressure while maximizing scavenge efficiency a key factor in maintaining peak performance, especially under heavy acceleration or at high RPMs. The valve s robust construction, featuring a durable shaft and finely machined internal components, ensures reliable operation even under the demanding conditions of off-road racing or aggressive riding. Whether you're tuning for improved acceleration, enhancing exhaust note, or restoring factory performance, this OEM replacement part guarantees a seamless fit and consistent performance, aligning perfectly with Kawasaki s stringent engineering standards. Ideal for both restoration projects and performance upgrades, the **13107-1405** is a must-have for enthusiasts seeking to preserve or enhance the exhilarating spirit of the KX250 s legendary cylinder engine.

### **Pros and Cons of Buying a Kawasaki 13107-1405 Gear Shaft Exhaust Power Valve for a 1999 KX250 (Cylinder Engine)**

1. **Performance Improvement** The power valve is designed to enhance exhaust flow, which can improve throttle response and power delivery, especially in mid-range RPMs. This can make the bike feel more aggressive and responsive, particularly in off-road or track conditions.

2. **Compatibility** Kawasaki s OEM parts are engineered to fit seamlessly with the 1999 KX250 s engine and exhaust system. Using an aftermarket or genuine replacement ensures proper function without modification conflicts.

3. **Durability** Kawasaki parts are generally built to last, provided they are installed correctly and maintained. The power valve is a critical component in the exhaust system, and a high-quality replacement can prevent issues like backpressure buildup or premature wear on other exhaust components.

4. **Ease of Installation** As a direct replacement part, the 13107-1405 power valve should be relatively straightforward to install, assuming basic mechanical skills. It typically requires removing the exhaust manifold or section of the exhaust system, which is a manageable task for most riders.

5. **Cost-Effective Upgrade** Compared to full exhaust system replacements or engine modifications, swapping out a power valve is a relatively inexpensive way to gain noticeable performance gains without major overhauls.

6. **Maintenance Convenience** If the original power valve fails or becomes clogged, replacing it is a simple and cost-effective solution rather than dealing with more complex exhaust or engine issues.

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1. **Limited Performance Gain** While the power valve can improve exhaust efficiency, the overall power increase may be modest unless paired with other modifications (e.g., a high-flow exhaust, upgraded carburetor, or air filter). Expect noticeable but not dramatic improvements.

2. **Potential for Improper Fitment** If the part is not installed correctly, it could lead to leaks, improper sealing, or even damage to surrounding components. Ensuring a proper gasket or sealant is used is crucial.

3. **Market Availability and Pricing** Kawasaki parts can sometimes be expensive, especially if sourced from official dealers. Prices may vary depending on the seller, and availability could be limited if the part is no longer in production.

4. **Warranty Considerations** If the bike is still under warranty (unlikely for a 1999 model), installing aftermarket or non-OEM parts may void coverage. Always check warranty terms before proceeding.

5. **No Guarantee of Long-Term Reliability** While Kawasaki parts are generally reliable, wear and tear can still occur over time. The power valve may require replacement again if it fails prematurely due to contamination (e.g., carbon buildup) or mechanical stress.

6. **Mixed Results with Stock Engine** If the rest of the engine and exhaust system is stock, the power valve s benefits may be less pronounced. For optimal results, consider pairing it with other upgrades (e.g., a high-performance exhaust or carburetor).

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The Kawasaki 13107-1405 gear shaft exhaust power valve is a **practical and cost-effective upgrade** for a 1999 KX250, offering measurable improvements in exhaust efficiency and throttle response. It is a **low-risk, high-reward** modification that can enhance the bike s performance without requiring extensive mechanical knowledge or major overhauls.

However, the gains may be modest unless combined with other upgrades. The part is **reliable and compatible**, but proper installation is essential to avoid issues. If you re looking for a simple, no-frills way to tweak your KX250 s exhaust flow, this is a solid choice. For more significant power gains, consider pairing it with a high-flow exhaust or carburetor upgrade.

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- **Buy the part** if you want a **direct, easy-to-install upgrade** that improves exhaust efficiency and throttle response.

- **Pair it with other modifications** (e.g., a high-performance exhaust or air filter) for better overall results.

- **Ensure proper installation** by following Kawasaki s guidelines or consulting a mechanic if unsure.

- **Monitor performance** after installation to confirm improvements and address any issues promptly.

For most riders, this is a **worthwhile purchase** that adds a subtle but noticeable edge to the KX250 s power delivery. If budget allows, consider investing in a **full exhaust system upgrade** for more dramatic gains.

Details:

Comes as shown with parts. We answer all inquiries. Teeth look good. Needs cleaning.

Parts in this listing are from: 1999 Kawasaki KX250, Item: Exhaust Power Valve Gear Spur Shaft,: Good used part. See fitment before purchasing. See pictures. Open communication.

part #: 131071405 prices

• $120.00-$369.99

specifications cyclevintagee:

• for models: Kx250, Kx, 250
• for makes: Kawasaki
• mpn: 13107-1405
• part type: Valve
• vintage part: No
• location: Boring Bar, Mailer Kawasaki 1999 Kx250

shipping cyclevintagee:

• transit: 2-6 Days
• carrier: USPS
• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail
• cost: $0.00
• type: Calculated

offer cyclevintagee:

• options: Ship-to-home
• availability: In Stock
• started: May 6, 2026
• quantity: 1
• best offers: True
• sold: 0

seller cyclevintagee:

• # reviews: 58907
• rating: 99.9%
• city: Spanish Fork, Utah

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

payments cyclevintagee:

• wallet: Apple-pay
• credit card: Visa
• other

returns cyclevintagee:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

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