fits model: Ex340. make: Yamaha. year: 1976-77.

( Manufacturer Part Number: 820-11611-30 ), ( Part Type: Ring )
The Yamaha NOS Ring Set EX340 is a high-quality, authentic replacement for your old or worn-out piston rings in your Yamaha motorcycle engine. These rings belong to the EX340 series that were specifically designed for engines with a cylinder bore size of 75mm and were produced between 1976 and 1977.
Paragraph 2:This NOS (New Old Stock) ring set includes all the necessary piston rings for your engine, ensuring a proper seal, reduced engine wear, and improved overall performance. The set consists of:
1. compression rings: designed to seal the combustion gases at top dead center (TDC) and promote the efficient transfer of heat from the piston to the cylinder wall.
2. oil control rings: responsible for controlling the oil film spreading rate by keeping the oil film thickness constant during the entire engine cycle.
3. skirt rings: work to minimize the oil consumption, prevent leakage, and provide secondary compression.
Paragraph 3:Made from high-quality, heat-treated materials, these rings offer excellent durability and performance. Each ring in this NOS set features a precise engineering design. The compression rings are made from a tempered iron alloy, while the oil control and skirt rings are made from the best steel alloys available at the time. These design features result in improved sealing ability, longer service life, and uniform wear.
Paragraph 4:The Yamaha NOS Ring Set EX340 is essential for restoring your 70s Yamaha 75mm engine to its former glory. By using NOS (New Old Stock) components instead of aftermarket alternatives, you can be confident in their authenticity, performance, and quality. No more worrying about compatibility or potential quirks of aftermarket rings.
Paragraph 5:Installing these NOS piston rings in your motorcycle engine is a straightforward process that can be done by a skilled mechanic. If you prefer, the rings can also be installed during a routine engine rebuild. By upgrading your piston rings, you can expect better power delivery, reduced oil consumption, and improved engine efficiency.
Paragraph 6:The Yamaha NOS Ring Set EX340 is perfect for motorcycle enthusiasts, collectors, and Yamaha restoration specialists. Make your vintage Yamaha motorcycle shines like new again! To ensure the correct fitment and compatibility, always double-check your engine model and serial number before purchasing.
Paragraph 7: By choosing the Yamaha NOS Ring Set EX340, you're investing in a product that offers:1. authenticity and originality
2. enhanced engine performance
3. improved sealing and combustion efficiency
4. peace of mind after installing high-quality new parts
Upgrade your vintage Yamaha motorcycle engine with genuine, NOS components that bring out the best in your bike's original design and power. Order the Yamaha NOS Ring Set EX340 today!
buying a new or New Old Stock (NOS) ring set for your motorcycle engine can be an essential investment to ensure reliable engine performance and extend its lifespan. Within the realm of classic motorcycles, the Yamaha EX340, produced between 1976 and 1977,stands out. In this assessment, we will discuss the benefits and potential drawbacks of purchasing a 820-11611-30 NOS ring set intended for Yamaha EX340 engines.
Pros (Advantages):1. Improved Engine Performance: New rings can significantly enhance the performance of an engine as they replace worn-out or damaged components, which may result in increased horsepower and torque.
2. Fuel Efficiency: Worn-out piston rings can cause poor sealing, leading to fuel inefficiency as the engine loses compressed fuel. New rings can preserve the original engine design, maintaining proper fuel economy.
3. Reduced Engine Wear: New piston rings, particularly those made of quality materials, can help prevent further engine wear, such as scuffing of the cylinder walls. This results in sustained engine reliability and longevity.
4. Better Combustion Efficiency: Properly sealing piston rings result in better combustion efficiency, which significantly improves engine power and cleanlest combustion.
5. Preserves Original Engine: Installing new rings from an NOS set maintains the original engine integrity by ensuring that only new and authentic components are used. This can benefit a motorcycle's collector value.
Cons (Disadvantages):1. Cost: An NOS ring set can be a costly investment, as it may cost more than an aftermarket or rebuilt ring set. However, it offers the original equipment manufacturer (OEM) quality and the assurance that the parts are new and unused.
2. Limited Availability: Given the age of the targeted motorcycle model, the availability of NOS ring sets can be limited. Extensive searching through junkyards, dealerships, and online markets may be necessary to locate a suitable NOS set.
Conclusion:In summary, the benefits of purchasing a Yamaha NOS ring set (820-11611-30) for a 1976-1977 EX340 far outweigh the potential disadvantages. The advantages include improved engine performance, increased fuel efficiency, reduced engine wear, better combustion efficiency, and the preservation of original engine integrity. However, the cost and limited availability of an NOS set are the primary concerns that must be addressed when considering this investment.
Recommendation:If you are a devoted owner of a 1976-1977 Yamaha EX340 and prioritize performance, reliability, and originality, an NOS ring set is an excellent investment. Analogy - it's like buying a spare tire with original tread in pristine condition. It may be a more expensive option but provides added value and peace of mind that can enhance both the riding experience and the motorcycle's collector status. Begin your search, and make the commitment to your classic motorcycle's performance and longevity!
Yamaha nos vintage - ring set EX340.