YAMAHA 2J5-11311-00-00 Top Cylinder Jug Barrelchead End Intake Manifold

( Manufacturer Part Number: 2J5-11311-00-00 ), ( Engine Type: 2-stroke ), ( Type: Cylinder Head Assembly )

Review YAMAHA Cylinder Jug Barrelchead Top End Intake Manifold fits YZ80 YZ 1979–1980

Yamaha YZ80 1979 Top End Intake Manifold (Part No. 2J5-11311-00-00)

The Yamaha YZ80 1979 Top End Intake Manifold (Part No. 2J5-11311-00-00) is a crucial component of the motorcycle's engine system. This intake manifold is meticulously crafted to ensure optimal airflow and efficient combustion in the 80cc, two-stroke, air-cooled engine.

The intake manifold is designed with a cylindrical jug barrel head, which houses the carburetor and intake ports. The carburetor, not included in this part, is responsible for mixing the correct amount of air and fuel before it enters the engine through the intake ports. The jug barrel head is made from a durable, lightweight material to reduce engine weight and enhance overall performance.

Each intake port on this manifold is precisely engineered to match the contours of the engine's cylinder head for a perfect seal. This ensures a smooth and uninterrupted flow of air-fuel mixture into the engine cylinders. The intake ports are also equipped with fine-tuned throttle valves, which control the intake airflow according to the rider's throttle input for responsive engine performance.

The top end intake manifold is a vital connection between the engine's cylinder head and the carburetor. Its design is essential for ensuring proper engine operation, including efficient combustion, even power delivery, and smooth engine idling. This genuine Yamaha replacement part is an excellent investment for any YZ80 motorcycle enthusiast seeking to maintain the original performance and reliability of their classic 1979 model.

- Cylindrical jug barrel head design

- Designed for use with the 1979 Yamaha YZ80

- Precisely engineered intake ports for a perfect seal

- Durable and lightweight construction

- Essential for efficient combustion and even power delivery

- Part number: 2J5-11311-00-00

- Application: Yamaha YZ80 (1979)

- Material: Durable and lightweight

- Includes: Intake manifold only (carburetor not included)

If you are in the market for a top-quality replacement top end intake manifold for your 1979 Yamaha YZ80, look no further than this genuine Yamaha product. With its precise design, durable construction, and excellent fit and finish, this intake manifold will help keep your classic motorcycle running at its best.

Buying a Yamaha YZ80 1979 Cylinder Jug Barrel Head and Top End Intake Manifold: A Comprehensive Look

The Yamaha YZ80 is a classic mini-bike that has been a favorite among riders for decades. If you own one and are considering upgrading the top end intake manifold and cylinder jug barrel head, this article will help you weigh the pros and cons to make an informed decision.

1. Improved Performance: A new top end intake manifold and cylinder jug barrel head can result in improved combustion efficiency and, subsequently, better engine performance.

2. Longer Engine Life: By upgrading these components, you can extend the life of your engine by reducing wear and tear.

3. Enhanced Power Output: A new top end intake manifold and cylinder jug barrel head may lead to increased power output, making your Yamaha YZ80 more responsive and faster.

4. Better Fuel Economy: Improved combustion efficiency can result in better fuel economy, saving you money in the long run.

5. Cosmetic Appeal: Installing new parts can give your Yamaha YZ80 a fresh, updated look.

1. Cost: New parts can be expensive, especially when purchasing both the intake manifold and cylinder jug barrel head together.

2. Installation Complexity: Installing these parts can be a complex and time-consuming process, requiring specialized tools and knowledge.

3. Potential for Compatibility Issues: Ensure that the new parts are compatible with your specific model and year of the Yamaha YZ80 before making a purchase.

4. Risk of Damaging Existing Components: The installation process may involve removing existing parts, increasing the risk of damaging them during removal or replacement.

5. Potential for Performance Variations: Even with new parts, performance may vary depending on factors such as engine condition, maintenance history, and rider skill.

A new Yamaha YZ80 cylinder jug barrel head and top end intake manifold can lead to improved performance, extended engine life, enhanced power output, better fuel economy, and a fresh cosmetic look. However, the cost, installation complexity, potential compatibility issues, risk of damaging existing components, and performance variations should be carefully considered before making a purchase. Ultimately, the decision to buy new parts depends on your budget, technical expertise, and goals for your Yamaha YZ80.

If you have a good mechanical understanding, the time and patience to install the parts, and a desire for improved performance and cosmetic appeal, purchasing a new Yamaha YZ80 cylinder jug barrel head and top end intake manifold could be a rewarding investment. However, if cost is a significant concern, or if you are unsure of your mechanical abilities, it may be worth considering alternative options, such as rebuilding the existing parts or purchasing a used set in good condition. Always ensure that you source your parts from a reputable supplier to guarantee compatibility and quality.

Details:

Cylinder bore looks to be 49mm has rust and a score line I can feel with fingernail. Nicks and scratches throughout. Will need to be bored out once more. 1979 Yamaha YZ80 cylinder/head/intake manifold/reed cage.

Gasket surfaces good. No cracks, threads good.

part #: 2j5113110000 prices

• $43.42-$97.00

specifications cylindermotorcycleiz:

• for models: Yz80, Yz
• for makes: Yamaha
• for years: 1979-1980
• mpn: 2j5-11311-00-00
• engine type: 2-stroke
• type: Cylinder Head Assembly

seller cylindermotorcycleiz:

• rating: 99.7%
• city: Tyngsboro, Massachusetts
• # reviews: 2676

shipping cylindermotorcycleiz:

• class: Standard
• cost: $15.98
• type: Calculated
• service: USPS Ground Advantage, UPS Ground
• carrier: USPS, UPS
• transit: 5-10 Days

returns cylindermotorcycleiz:

• policy: No Returns

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

offer cylindermotorcycleiz:

• started: April 25, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0

payments cylindermotorcycleiz:

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

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