YAMAHA Piston Ring Nos 2W5-11611-20-00 0.50 2ND O/s

( Manufacturer Part Number: 2W5-11611-20 ), ( Engine Type: 2-stroke ), ( Type: Piston Ring Set ), ( Ipn: 2w5-11611-20-00 ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle, Scooter, Street Motorcycle ), ( Items Included: Piston Rings ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: Japan ), ( Performance Part: No )

Review YAMAHA New 0.50 2nd O/s Piston Ring 100 Oem Nos fits YZ100 YZ 1976–1981

Introducing the Yamaha 2W5-11611-20 1976-1981 YZ100 0.50 2nd O.S. piston ring. This is an original Yamaha replacement part designed specifically for the YZ100 motorcycle models produced between 1976 and 1981. The ring is made for the 0.50 inch (12.7mm) bore size and is the second over-size (O.S.) piston ring.

The 2W5-11611-20 piston ring is engineered to meet the high performance standards of Yamaha motorcycles. It is manufactured using premium materials to ensure durability and longevity. The ring features a precise fit, ensuring optimal sealing and compression for the engine cylinder.

The design of the 2W5-11611-20 piston ring includes a compressive fit, which helps to minimize the clearance between the piston and cylinder wall. This reduces the amount of blow-by gases that can escape, improving the overall performance of the engine.

The 2nd O.S. piston ring is an essential component of the engine, as it helps to prevent oil from entering the combustion chamber during the compression stroke. By maintaining a tight seal, the ring ensures that the engine runs efficiently and effectively while reducing the amount of oil consumption.

Installing this piston ring is a straightforward process, and it comes with clear and concise instructions to guide you through the process. It is recommended to replace the piston rings in pairs, so if you are replacing the first O.S. ring, consider replacing the second O.S. ring as well for optimal engine performance.

In conclusion, the Yamaha 2W5-11611-20 1976-1981 YZ100 0.50 2nd O.S. piston ring is a high-quality replacement part designed to ensure the longevity and performance of your Yamaha YZ100 motorcycle. It is precision-engineered to fit perfectly, and its compressive design helps to minimize blow-by gases and improve engine efficiency. If you are looking to keep your YZ100 in top condition, this is an essential part to consider.

Piston Ring Replacement with Yamaha 2W5-11611-20 for YZ100 (1976-1981) - Pros, Cons, and Conclusion

Yamaha 2W5-11611-20 is a 0.50 2nd over-size piston ring designed for YZ100 motorcycles manufactured between 1976 and 1981. In this article, we will discuss the advantages and disadvantages of using this piston ring for your YZ100 and provide a conclusion with a recommendation.

1. OEM (Original Equipment Manufacturer) Replacement: Yamaha 2W5-11611-20 is an original piston ring produced by Yamaha, ensuring a perfect fit and optimal performance for your motorcycle.

2. Improved Sealing: The oversized piston ring offers enhanced sealing capabilities, reducing the chances of oil leaks and improving engine efficiency.

3. Longer Engine Life: By providing better sealing, this piston ring can contribute to a longer engine life by preventing oil loss and reducing wear and tear on engine components.

1. Cost: Original equipment replacement parts, like the Yamaha 2W5-11611-20, can be more expensive than aftermarket alternatives.

2. Availability: Due to its age, it might be challenging to find this piston ring in local stores or through distributors, requiring you to order it online.

The Yamaha 2W5-11611-20 piston ring is an excellent choice for YZ100 motorcycle owners seeking an original, high-quality replacement part. Its OEM design ensures a perfect fit, and the oversized piston ring improves sealing, contributing to a longer engine life. However, the higher cost and potential availability issues are important factors to consider.

If you prioritize original equipment and the benefits of improved sealing and longer engine life, the Yamaha 2W5-11611-20 piston ring is an excellent investment for your YZ100 motorcycle. Ensure you purchase it from a reliable supplier to guarantee authenticity and availability. If cost is a concern, consider researching aftermarket alternatives that may offer similar performance characteristics at a lower cost.

Details:

NEW 1976-1981 Yamaha YZ100 0.50 2nd O/S Piston Ring YZ 100 OEM 2W5-11611-20 NOS. Shipped with USPS Ground Advantage. Condition is New.

part #: 2w51161120 prices

• $8.99-$14.98

specifications pistondon:

• for models: Yz100, Yz
• for makes: Yamaha
• for years: 1976-1981
• mpn: 2w5-11611-20
• engine type: 2-stroke
• type: Piston Ring Set
• ipn: 2w5-11611-20-00
• machine type: Dual Sport Motorcycle, Off-road Motorcycle, Scooter, Street Motorcycle
• items included: Piston Rings
• vintage part: Yes
• country/region of manufacture: Japan
• performance part: No

payments pistondon:

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

general pistondon:

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

shipping pistondon:

• type: Fixed
• transit: 5-10 Days
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• cost: $5.20

offer pistondon:

• availability: In Stock
• quantity: 1
• started: October 12, 2025
• options: Ship-to-home
• sold: 0

seller pistondon:

• city: Tulsa, Oklahoma
• # reviews: 2317
• rating: 100.0%

returns pistondon:

• policy: No Returns

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