WISECO 559M05800 Nos Pisto Kit 58.00 2.00 O/s 559P8

( Brand: Wiseco ), ( Manufacturer Part Number: 559M05800 ), ( Type: Piston Kit )

Review WISECO Nos Yamaha Pisto Kit 58.00 2.00 O/s fits YZ125 YZ 125 1986–1988

Introducing the WiseCo 559M05800 piston kit for Yamaha YZ125 and YZ125 models, an excellent upgrade for your two-stroke engine. This high-performance piston kit is designed to deliver improved power and efficiency, making it an ideal choice for riders seeking to enhance their motorcross or off-road riding experience.

The piston kit includes four pistons, specifically marked Nos. 86-88, each engineered with precision to ensure perfect fitment and functionality. These pistons are manufactured using advanced materials and techniques, ensuring superior strength and durability. Moreover, they offer enhanced thermal conductivity, which helps dissipate heat efficiently, thus reducing the likelihood of engine overheating.

The piston kit comes with an oversize piston pin, part number 559P8, which is 2.00mm larger in diameter compared to the OEM part. This upgrade significantly increases the piston's rigidity and stability, leading to better engine performance and reduced engine wear.

Installing the WiseCo piston kit on your Yamaha YZ125 or YZ125 is a straightforward process. The kit is designed to be a direct replacement of the OEM parts, ensuring a hassle-free installation experience. However, we always recommend following the manufacturer's instructions carefully and using appropriate tools to ensure a successful installation.

In summary, the WiseCo 559M05800 piston kit is an exceptional upgrade for your Yamaha YZ125 or YZ125 engine. This high-performance piston kit delivers improved power, efficiency, and durability, ensuring you can enjoy a more exciting and reliable riding experience. With its precision engineering, advanced materials, and easy installation process, the WiseCo piston kit is an excellent investment for any serious motorcross or off-road enthusiast.

Wiseco 559M05800 NOS 86-88 Yamaha YZ125 Piston Kit: A Detailed Analysis

The Wiseco 559M05800 NOS 86-88 Yamaha YZ125 Piston Kit is a popular aftermarket upgrade for those looking to enhance the performance of their YZ125 motorcycle. In this analysis, we will discuss the potential advantages and disadvantages of investing in this piston kit.

1. Enhanced Power: The Wiseco piston kit is designed to provide increased power and torque. This can lead to improved acceleration and top-end speed.

2. Durability: Wiseco is known for manufacturing high-quality pistons that can withstand the rigors of off-road racing. The piston kit is also designed to be compatible with high-compression engines, making it suitable for riders seeking increased performance.

3. Improved Engine Response: The piston kit can improve the engine's response, enabling faster throttle response and smoother power delivery.

4. Customizability: The Wiseco kit comes in a range of sizes and designs, allowing riders to customize their engines to suit their specific riding style and power requirements.

1. Cost: The Wiseco piston kit is more expensive than the stock piston. However, the performance benefits and potential for increased power may justify the investment for some riders.

2. Installation Complexity: Installing the piston kit requires a significant amount of time and expertise. It is recommended that the installation be performed by a professional mechanic to ensure that the engine is properly assembled and tuned.

3. Compatibility: The Wiseco piston kit is designed for specific engine models and years. Riders must ensure that they purchase the correct kit for their motorcycle to avoid compatibility issues and potential engine damage.

The Wiseco 559M05800 NOS 86-88 Yamaha YZ125 Piston Kit offers several advantages for riders seeking to enhance the performance of their YZ125 motorcycle. These advantages include increased power, improved durability, enhanced engine response, and customizability. However, the kit also comes with some disadvantages, including a higher cost, installation complexity, and compatibility requirements. Ultimately, the decision to invest in this piston kit depends on the rider's budget, performance goals, and technical expertise.

If you are a serious off-road rider seeking to extract maximum performance from your YZ125 motorcycle, the Wiseco 559M05800 NOS 86-88 Yamaha YZ125 Piston Kit is a worthwhile investment. However, if you are a casual rider or new to motorcycle maintenance, it may be wiser to stick with the stock piston and focus on other areas of maintenance and upgrades. Always consult with a professional mechanic or trusted source before making any significant modifications to your motorcycle.

Details:

WISECO PART # 559M05800. APPLICATIONS: 86-88 YAMAHA YZ125. 58.00mm BORE. New in original package.

SIZE: 2.00mm OVERSIZE.

part #: 559m05800 prices

• $79.95-$170.99

specifications pistondon:

• for models: Yz125, Yz, 125
• for makes: Yamaha
• for years: 1986-1988
• brand: Wiseco
• mpn: 559m05800
• type: Piston Kit

seller pistondon:

• rating: 99.8%
• # reviews: 20314
• city: Walkertown, North Carolina

returns pistondon:

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

offer pistondon:

• started: January 13, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1

payments pistondon:

• credit card: Visa
• other
• wallet: Paypal

shipping pistondon:

• type: Fixed
• service: USPS Ground Advantage
• carrier: USPS
• cost: $8.95
• transit: 3-8 Days
• class: Standard

general pistondon:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

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