YAMAHA Nos Piston Kit .50MM 3R3-11630-20-00

( Manufacturer Part Number: 3R3-11630-20 ), ( Part Type: Piston ), ( Country Of Origin: United States ), ( Manufacturer Warranty: 30 Day ), ( Storage Location: J8 Crp1-n Buk 14 )

Review YAMAHA Nos Piston Kit .50mm Os fits YZ125 1980–1981

Introducing the Yamaha YZ125 NOS (New Old Stock) Piston Kit 3R3-11630-20-00. This authentic part is a must-have for restoration projects or for riders who prefer using original equipment for optimal performance. This piston kit is designed specifically for the 1980-1981 Yamaha YZ125 model.

The piston kit includes a new piston and piston rings. The piston is made of high-quality forged aluminum alloy, ensuring durability and reliability. The piston rings are precision-engineered to provide a snug fit and excellent sealing to prevent oil leaks and compressive gas loss. The piston features a compression height of 50mm, ensuring compatibility with the respective engine model.

This NOS piston kit is a direct replacement part, meaning it fits and functions exactly like the original part that came with your Yamaha YZ125. It's important to note that the installation process may require some mechanical skills and tools. In addition, it's recommended to follow the manufacturer's instructions carefully to ensure proper installation and to avoid any potential damages.

By using this Yamaha YZ125 NOS piston kit 3R3-11630-20-00, you can restore your classic motorcycle to its original condition or maintain its performance at an optimal level. The piston kit comes in genuine Yamaha packaging, ensuring authenticity and peace of mind.

In conclusion, this Yamaha YZ125 NOS piston kit 3R3-11630-20-00 is an essential component for any Yamaha YZ125 enthusiast, collector, or rider who values original equipment and optimal performance. It's a direct replacement part for the 1980-1981 Yamaha YZ125 model, featuring a high-quality forged aluminum piston and precision-engineered piston rings. The piston has a compression height of 50mm, ensuring compatibility with the respective engine model. The kit comes in genuine Yamaha packaging, ensuring authenticity and peace of mind.

Pros and Cons of Buying Yamaha YZ125 NOS Piston Kit (3R3-11630-20) for 1980-1981 Models

1. **Authenticity and Originality**: This piston kit is a new old stock (NOS) item, meaning it is an original part that was produced by Yamaha during the 1980-1981 period but never sold or used. It can ensure the authenticity of the engine components and help maintain or restore the original condition of your 1980-1981 YZ125.

2. **Reliability and Performance**: The NOS piston kit is likely to be in excellent condition, free from any signs of wear or damage. This can contribute to improved engine reliability and performance, as the piston is a crucial component in the combustion process.

3. **Availability and Convenience**: Since this is a new old stock item, it is still available for purchase, even after all these years. This can be a significant advantage for collectors, restorers, or enthusiasts who may have trouble finding original parts for their vintage motorcycles.

4. **Cost-Effective in the Long Run**: Although the initial cost of a new old stock piston kit might be higher than that of a reconditioned or aftermarket part, the long-term benefits can include increased durability, reliability, and resale value for your motorcycle.

5. **Compatibility**: The Yamaha YZ125 NOS piston kit (3R3-11630-20) is designed specifically for the 1980-1981 YZ125 models, ensuring a perfect fit and proper function.

6. **Quality Assurance**: Since it is a new old stock item, it comes with the assurance of Yamaha's quality standards at the time of production.

1. **Higher Initial Cost**: The NOS piston kit may be more expensive compared to aftermarket or reconditioned options.

2. **Limited Availability**: New old stock items are not always readily available, and the search for the specific part number (3R3-11630-20) might take some time and effort.

3. **Potential Handling and Storage Requirements**: Depending on the seller, the NOS piston kit may need special handling or storage conditions to maintain its original condition.

In conclusion, the Yamaha YZ125 NOS piston kit (3R3-11630-20) is an excellent investment for collectors, restorers, or enthusiasts of the 1980-1981 YZ125 models. Its authenticity, reliability, and performance benefits can contribute to a more enjoyable and rewarding ownership experience. Although it may come with a higher initial cost and limited availability, the long-term advantages and peace of mind that come with using an original part can make it a worthwhile investment.

If you are in the market for a piston kit for your 1980-1981 Yamaha YZ125 and prefer an original part, the NOS piston kit (3R3-11630-20) is a strong recommendation. Make sure to source it from a reputable seller and follow any necessary handling or storage instructions to ensure its optimal condition.

Details:

We started with a single motorcycle dismantled in home garage. This New Old Stock NOS Yamaha piston kit, with a .50mm oversize, is genuine OEM replacement for YZ125 model's. To Watch. Ideal for engine rebuilds, ensuring factory-spec performance and durability.

Every part is one-of-a-kind. Larger items from $46.99. Spotlight: A Day Inside . Please verify the part number and compatible model's before purchasing.

FREE shipping on every order to the lower 48 states. Look for the Make Offer button on listing page. Item must be in original, uninstalled condition with no modifications.: Are these genuine OEM parts?, Yes.

Do you combine shipping?, Yes. We review all reasonable offers promptly. 4.8 out of 5 stars across 322 reviews. Do you accept offers?, Some listings offers.

part #: 3r31163020 prices

• $105.00-$195.00

specifications pistondon:

• for models: Yz125
• for makes: Yamaha
• for years: 1980-1981
• mpn: 3r3-11630-20
• part type: Piston
• country of origin: United States
• manufacturer warranty: 30 Day
• storage location: J8 Crp1-n Buk 14

returns pistondon:

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

shipping pistondon:

• type: Fixed
• cost: $0.00
• transit: 5-9 Days
• carrier: FedEx, USPS
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight
• class: Standard, Expedited, One-day

payments pistondon:

• wallet: Paypal
• credit card: Diners-club
• other

general pistondon:

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

offer pistondon:

• options: Ship-to-home
• quantity: 2
• availability: In Stock
• started: May 21, 2026
• sold: 0
• best offers: True

seller pistondon:

• # reviews: 231112
• rating: 99.5%
• city: Odessa, Florida

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