YAMAHA 3SR-11631-00-94 Standard Piston

( Manufacturer Part Number: 3SR-11631-00-94 ), ( Part Type: Piston ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: K7 Mot-n Buk 58 )

Review YAMAHA Oem Standard Piston fits YZ125 YZ250 1988–1990

The Yamaha 3SR-11631-00-94 piston is a replacement part designed for use in the Yamaha YZ125 and YZ250 standard motorcycles produced between the years 1988 and 1990. This piston is a crucial component of the engine, responsible for transferring the force of the combustion process to the crankshaft, thus propelling the motorcycle forward.

The 3SR-11631-00-94 piston is made of a high-quality forged aluminum alloy material, ensuring both strength and lightweight properties. Its shape is optimized for the specific engine design of the YZ125 and YZ250 motorcycles, providing efficient combustion and optimal power delivery.

The piston crown is designed with a dish shape, which helps to increase the compression ratio and improve engine performance. The piston skirt is engineered to fit snugly into the cylinder bore, minimizing the amount of blowby and reducing the amount of engine oil consumption.

The piston also features a ring groove design with three compression rings and one oil control ring. The compression rings are designed to seal the combustion gases and provide optimal compression for efficient power delivery. The oil control ring ensures that engine oil is contained within the engine, reducing the risk of oil leakage and ensuring a cleaner engine environment.

The piston pin is made of chrome molybdenum steel, which is known for its high strength and durability. The piston pin is held in place by a piston pin retaining clip, ensuring a secure fit and reducing the risk of the piston pin coming loose during operation.

The 3SR-11631-00-94 piston is manufactured to meet Yamaha's exacting standards for quality and performance. It is designed to provide a direct fit and easy installation, making it an ideal replacement option for riders who need to restore their motorcycle to its original performance level.

In summary, the Yamaha 3SR-11631-00-94 piston is a high-quality, forged aluminum replacement piston designed for use in Yamaha YZ125 and YZ250 motorcycles produced between 1988 and 1990. Its optimized shape, high-quality materials, and precise engineering make it an ideal choice for riders looking to restore their motorcycle to its original performance level.

Pros and Cons of Buying a Yamaha YZ125/YZ250 Standard Piston (Model: 3SR-11631-00-94, Years: 1988-1990)

a. Historical Value: These pistons were used in classic Yamaha YZ125 and YZ250 models during the late 1980s and early 1990s. Owning a part with such history can be appealing to collectors and enthusiasts.

b. Cost-Effective: Replacing only the piston instead of the entire engine can save significant money, especially for those looking to restore or maintain a vintage motorcycle.

c. Performance Upgrade: A new piston can improve engine performance by ensuring a proper fit and optimal engine efficiency.

a. Availability: These pistons are no longer in production, which may make them harder to find and purchase.

b. Compatibility: Ensure the piston is compatible with your specific engine model and year before purchasing.

c. Installation: Installing a new piston requires expertise and the proper tools, which may add to the overall cost.

A used Yamaha YZ125/YZ250 standard piston (Model: 3SR-11631-00-94, Years: 1988-1990) can be a cost-effective solution for those looking to restore or maintain a vintage motorcycle. However, the availability of these pistons can be a challenge, and their installation requires expertise and the proper tools. For collectors and enthusiasts, the historical value of these parts can make the search worthwhile.

Before purchasing a used Yamaha YZ125/YZ250 standard piston, verify its compatibility with your engine model and year. Research reliable sources for obtaining the part and ensure the seller is reputable. Consider the cost of the piston, as well as the cost of installation, when determining the overall affordability of the purchase. If you are unsure about the installation process, consult a professional mechanic for assistance.

Details:

The image to watch on YouTube. Yamaha Cruisers. Ensure compatibility with your motorcycle before purchase. Spotlight: A Day Inside .

This is a genuine Yamaha OEM standard size piston, part number 3SR-11631-00-94, designed for specific YZ125 and YZ250 model's. Fits: Fits 1990 Yamaha YZ125 and 1988 - 1990 YZ250 model's.

part #: 3sr116310094 prices

• $109.97-$456.03

specifications pistondon:

• for models: Yz125, Yz250
• for makes: Yamaha
• for years: 1988-1990
• mpn: 3sr-11631-00-94
• part type: Piston
• country of origin: United States
• manufacturer warranty: Unspecified Length
• storage location: K7 Mot-n Buk 58

general pistondon:

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

payments pistondon:

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

returns pistondon:

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

seller pistondon:

• city: Odessa, Florida
• # reviews: 2004 76
• rating: 99.2%

shipping pistondon:

• carrier: FedEx, USPS
• transit: 4-8 Days
• cost: $0.00
• class: Standard, Expedited, One-day
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight

offer pistondon:

• sold: 0
• options: Ship-to-home
• quantity: 1
• started: December 15, 2025
• availability: In Stock

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