YAMAHA 39X-11630-00 Piston Kit

( Manufacturer Part Number: 39X-11630-00 ), ( Engine Type: 2-stroke ), ( Type: Piston Kit ), ( Machine Type: Off-road Motorcycle )

Review YAMAHA Piston Kit fits YZ STD 250 1983–1984

Yamaha YZ 250 STD Piston Kit (1983-1984) - 39x-11630-00

This Yamaha YZ 250 STD Piston Kit, with part number 39x-11630-00, is specifically designed for Yamaha YZ 250 motorcycles manufactured between the years 1983 and 1984. The piston kit is an essential upgrade for those seeking improved engine performance or restoring their classic two-wheelers to original specifications.

The piston kit includes high-quality, forged pistons that have been meticulously engineered to offer enhanced durability and reliability. Each piston is crafted from a strong, lightweight alloy material, allowing for optimal power transfer and increased combustion efficiency. The piston's design incorporates a compression height and ring groove dimensions that match the original equipment manufacturer's (OEM) specifications for perfect fitment.

The piston kit also comes with new rings, including a compression ring, oil control ring, and skirt ring. These rings are designed to provide superior sealing and prevent oil leakage, ensuring a more efficient combustion process and improved engine longevity.

The piston kit's piston pin and ring retaining clips are included in the package, ensuring a complete and hassle-free installation process. The piston pin is made from chrome-molybdenum steel, offering superior strength and resilience against fatigue. The ring retaining clips are made from heat-resistant, high-strength steel, ensuring secure ring retention even under the most demanding conditions.

Installing this piston kit requires standard engine rebuild procedures. The kit does not include gaskets or seals, so it's essential to ensure that compatible gaskets and seals are used during the installation process to avoid any potential leaks.

By upgrading your Yamaha YZ 250 motorcycle with this 1983-1984 piston kit, you'll benefit from increased power output, enhanced engine longevity, and a more responsive riding experience. The high-quality materials and precise engineering make this piston kit an excellent investment for enthusiasts looking to restore their classic bikes or maximize the performance of their daily rider.

Pros and Cons of Buying a Yamaha YZ 250 Standard Piston Kit (1983-1984)

The Yamaha YZ 250 Standard Piston Kit (Model number: 39X-11630-00) is an aftermarket replacement for the piston in the 1983-1984 Yamaha YZ 250 motorcycle. This kit can help improve the performance of your bike or extend its life. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this piston kit.

1. Improved Performance: The aftermarket piston kit may offer increased power and torque compared to the original OEM piston. This can lead to better acceleration and overall riding experience.

2. Durability: High-quality aftermarket pistons are often designed to withstand more stress and heat than the stock pistons. This can contribute to a longer engine life.

3. Customization: Installing an aftermarket piston kit allows riders to customize their motorcycle to meet their specific performance needs or preferences.

4. Cost-Effective: In some cases, aftermarket piston kits may be more cost-effective than purchasing a new motorcycle or even a rebuilt engine.

1. Installation Complexity: Installing an aftermarket piston kit requires considerable expertise and specialized tools. It is not a DIY project for most riders and may involve significant labor costs.

2. Potential Compatibility Issues: Ensure that the aftermarket piston kit is compatible with your specific motorcycle model and year. Incorrect installation can lead to engine damage or failure.

3. Risk of Engine Damage: Improper installation or use of low-quality aftermarket pistons can result in engine damage, such as bent connecting rods or piston rings that do not seal correctly.

4. Lifetime: Aftermarket pistons may not last as long as OEM pistons under certain conditions, especially in high-stress applications or extreme temperatures.

The Yamaha YZ 250 Standard Piston Kit (Model number: 39X-11630-00) offers several advantages, such as improved performance, durability, customization, and cost-effectiveness. However, it also comes with some disadvantages, like installation complexity, potential compatibility issues, and the risk of engine damage. Ultimately, the decision to purchase this piston kit depends on your mechanical skills, budget, and the specific performance goals you have for your motorcycle.

If you are confident in your mechanical skills and have the necessary tools, purchasing the Yamaha YZ 250 Standard Piston Kit could be a cost-effective way to improve your motorcycle's performance and extend its engine life. However, if you lack experience or resources for the installation process, it may be wiser to consult a professional mechanic. Additionally, always ensure that the aftermarket piston kit is compatible with your specific motorcycle model and year to avoid any potential issues.

Details:

The OE/OEM part number 39X-11630-00 guarantees a perfect fit and compatibility with your Yamaha YZ 250 STD motorcycle. Manufactured by Yamaha, this piston kit includes all the necessary components to ensure optimal performance and durability. The 1983 1984 Yamaha YZ 250 STD Piston kit is a high-quality replacement part designed specifically for off-road motorcycles with 2-stroke engine. New In Box Genuine Yamaha piston kit Includes piston, rings, wrist pin cir clips,wrist Never been installed Please look at photos to be sure of fitment.

Looks to fit 1983 and 1984 model's only.

part #: 39x1163000 prices

• $63.99-$212.12

specifications pistondon:

• for models: Yz, Std, 250
• for makes: Yamaha
• for years: 1983-1984
• mpn: 39x-11630-00
• engine type: 2-stroke
• type: Piston Kit
• machine type: Off-road Motorcycle

returns pistondon:

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

seller pistondon:

• city: Dubuque, Iowa
• rating: 100.0%
• # reviews: 288

shipping pistondon:

• cost: $0.00
• service: UPS Ground Saver
• transit: 4-8 Days
• type: Fixed
• carrier: UPS
• class: Economy

offer pistondon:

• availability: In Stock
• options: Ship-to-home
• started: October 26, 2025
• best offers: True
• sold: 0
• quantity: 1

payments pistondon:

• credit card: Visa
• other
• wallet: Paypal

general pistondon:

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

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