1. Pistons, Rings & Piston Kits Products
  2. sku: 10017840405990741
  3. YAMAHA 166-11637-01-00

YAMAHA 166-11637-01-00 Top Piston Rings Engine Kit YL2 67-70 68 69 .75MM O/s

fits make: Yamaha.

166-11637-01-00 Yamaha Piston Rings Engine Top Kit Yl2 100 67-70 68 69 .75mm O/s Made In Japan

( Part Type: Ring Piston Engine ), ( Country Of Origin: Japan ), ( UPC: 166116370100 )

Review YAMAHA Piston Rings Engine Top Kit Yl2 100 67-70 68 69 .75mm O/s Made In Japan

The Yamaha 166-11637-01-00 piston rings engine top kit is specifically designed for two-stroke, air-cooled Yamaha engines with an over-size (OS) bore of 75mm. This kit is suitable for various models including, but not limited to, Yamaha YL2 engines manufactured between the years 1967 and 1970.

This comprehensive kit includes all the essential components required for the replacement of piston rings in the engine's top end. The kit consists of:

1. Two compression piston rings: These rings are designed to seal the combustion chamber effectively, ensuring optimal compression and power output. They are manufactured from high-quality, durable materials to withstand the rigors of two-stroke engine operation.

2. Two oil scraper piston rings: These rings are responsible for scraping the excess oil from the engine's piston walls and transferring it to the crankcase for lubrication. They are carefully crafted to ensure efficient oil transfer and minimize oil consumption.

3. Two piston rings groove sealing bands: These bands are essential for maintaining the sealing integrity of the piston rings in the engine's cylinder bore. They are designed to prevent oil and combustion gases from escaping, ensuring optimal engine performance and efficiency.

4. Two piston ring compressors: These tools are necessary for correctly installing the new piston rings. They apply even pressure to the piston rings during installation, ensuring a proper fit and sealing performance.

5. Two piston ring installation plungers: These plungers are used in conjunction with the piston ring compressors to facilitate the installation process. They help to guide the piston rings into place and ensure that they are correctly positioned within the cylinder bore.

6. Two piston ring groove scrapers: These tools are used to remove any old, worn-out piston ring groove sealing material before installing the new rings. They ensure a clean and accurate installation surface for the new rings.

The Yamaha 166-11637-01-00 piston rings engine top kit is an essential investment for any Yamaha two-stroke engine owner seeking to maintain optimal engine performance and efficiency. Its high-quality components are meticulously engineered to provide a perfect fit and long-lasting performance, ensuring that your engine runs smoothly and reliably for years to come.

Buying a Yamaha 166-11637-01-00 Piston Rings Engine Top Kit for YL2 Engines (75mm Over-Sized)

Introduction:

The Yamaha 166-11637-01-00 Piston Rings Engine Top Kit is designed for YL2 engines with a 75mm over-sized bore. This kit includes new piston rings to help improve engine performance, reduce oil consumption, and prevent engine damage. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this piston ring kit.

Pros:

1. Improved Engine Performance: By replacing the worn-out piston rings, you can effectively enhance the engine's compression and combustion efficiency, leading to improved power output and better overall performance.

2. Reduced Oil Consumption: Worn-out piston rings can cause excessive oil consumption due to blow-by gases escaping into the crankcase. Installing new rings can help minimize this issue, ultimately saving you money on oil costs.

3. Prevent Engine Damage: Worn-out piston rings can lead to serious engine damage, such as scuffed cylinder walls or even piston damage. Replacing the rings before such damage occurs can save you from costly engine repairs or even the need for an engine replacement.

Cons:

1. Cost: The cost of purchasing a new piston ring kit can be a significant investment, especially if you're not experiencing any major issues with your engine. However, the long-term benefits in terms of improved engine performance, reduced oil consumption, and avoiding costly repairs can make the investment worthwhile.

2. Installation Complexity: Installing a piston ring kit can be a complex process that requires specialized tools and a certain level of mechanical expertise. If you're not confident in your ability to install the rings yourself, you may need to pay for professional installation, which can add to the overall cost.

3. Time Consuming: Installing a piston ring kit can be a time-consuming process, taking several hours to complete. This can be inconvenient for those who need their engine running as soon as possible.

Conclusion:

The Yamaha 166-11637-01-00 Piston Rings Engine Top Kit offers several advantages, including improved engine performance, reduced oil consumption, and preventing engine damage. However, it comes with some drawbacks, such as the cost, installation complexity, and time consumption. Ultimately, the decision to purchase this piston ring kit depends on your engine's condition, your budget, and your willingness to invest time and effort into the installation process. If you're experiencing issues with your engine's performance or oil consumption, or if you're planning extensive use of your engine, the benefits of this kit may outweigh the costs. On the other hand, if your engine is running smoothly and you're not experiencing any major issues, it may be worth considering other maintenance tasks or upgrades that offer a more immediate return on investment.

Recommendation:

If you're experiencing issues with your engine's performance, oil consumption, or if you're planning extensive use of your engine, the Yamaha 166-11637-01-00 Piston Rings Engine Top Kit can be a worthwhile investment to improve engine performance, reduce oil consumption, and prevent potential engine damage. However, if your engine is running smoothly and you're not experiencing any major issues, it may be worth considering other maintenance tasks or upgrades that offer a more immediate return on investment. In either case, it's essential to consult your engine's user manual or consult with a professional mechanic to ensure that the piston rings are the appropriate size and fit for your engine.

Details:

YL2 100 1967-1970. It is new and not OEM but a direct replacement that was made in Japan. Piston Rings Engine Top Kit Yamaha YL2 100 67-70 68 69 .75MM O/S Made In Japan, This is a NEW .75mm oversize piston kit with rings that were made in and not Taiwan or China like most of them out there. The part number shows it will fit these model's.

The kit includes piston, wrist pin, pin clips and piston rings. Thanks and ride safe. Everything shown in the pictures is included with listing sale. Comes with piston and rings.

part #: 166116370100 prices

  • $14.95-$45.95

specifications pistondon:

  • for makes: Yamaha
  • part type: Ring Piston Engine
  • country of origin: Japan
  • upc: 166116370100

seller pistondon:

  • rating: 99.7%
  • # reviews: 11707
  • city: Moorpark, California

returns pistondon:

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

shipping pistondon:

  • carrier: USPS, UPS
  • transit: 5-10 Days
  • cost: $10.00
  • class: Standard, Expedited
  • type: Calculated
  • service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Ground

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general pistondon:

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

offer pistondon:

  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • started: January 17, 2026
  • sold: 0
for makes: yamaha, part type: ring piston engine, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 10017840405990741,

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