YAMAHA 4EW-11631-01-A0 Cylinder Jug 68MM

( Manufacturer Part Number: 4EW-11631-01-A0 ), ( Part Type: Cylinder )

Review YAMAHA Oem Cylinder Jug 68mm Bore fits YZ250 WR250 YZ 250 WR 1994–1997

The Yamaha YZ 250, manufactured between 1994 and 1997, is a legendary motorcycle known for its agility and high-performance capabilities. At the heart of this machine is the 68mm cylinder jug, part number 4EW-11631-01-A0, which is a crucial component of the WR250's powerful 250cc, two-stroke, liquid-cooled engine.

This cylinder jug is meticulously crafted by Yamaha using premium materials to ensure optimal engine performance. Its dimensions are 68mm in diameter and 64mm in length, making it perfectly suited for the YZ250 model. The jug is designed with a finned design, which enhances the engine's cooling efficiency, allowing it to maintain consistent performance even during high-stress riding conditions.

The cylinder jug is equipped with a transfer port, which facilitates the efficient transfer of the fuel-air mixture from the carburetor to the combustion chamber. The transfer port is designed with precision, ensuring optimal fuel delivery for optimal power and torque.

The jug also features a reed valve assembly, which is essential for the two-stroke engine's intake and exhaust functions. The reed valves are designed to seal tightly, preventing any fuel or oil from leaking out during the compression and power strokes while allowing the intake and exhaust gases to flow freely during the transfer stroke.

The cylinder jug is manufactured to the highest standards of quality and precision, ensuring a perfect fit and reliable operation. It is an essential component for any Yamaha YZ250 enthusiast or collector, as it not only enhances the performance of the motorcycle but also adds to its historical value.

In summary, the Yamaha 4EW-11631-01-A0 68mm cylinder jug is a vital component of the Yamaha YZ250 motorcycle, manufactured between 1994 and 1997. Its precise design, high-quality materials, and meticulous manufacturing process make it an essential upgrade for any YZ250 owner looking to enhance their motorcycle's performance and historical value.

Pros and Cons of Buying a Yamaha YZ250 (1996) Cylinder Jug with a 68mm Bore

The Yamaha YZ250, especially the 1996 model, is a popular choice among motorcycle enthusiasts for off-road racing and riding. The cylinder jug with a 68mm bore is a critical component of this motorcycle, and many riders consider upgrading or replacing it. In this article, we'll discuss the pros and cons of buying a Yamaha YZ250 (1996) cylinder jug with a 68mm bore.

1. Increased Power: A larger bore cylinder jug can lead to increased power output, which is a significant advantage for off-road racing and high-performance riding.

2. Better Throttle Response: A larger cylinder jug can provide better throttle response, making the motorcycle more responsive and agile.

3. Improved Engine Compression: A larger cylinder jug can improve engine compression, leading to better fuel efficiency and overall engine performance.

4. Customization: Upgrading to a larger cylinder jug can be an excellent opportunity for customization, allowing riders to tailor their motorcycle to their specific riding style and preferences.

5. Durability: Yamaha is known for its high-quality components, and a new cylinder jug can ensure the longevity of the engine and provide peace of mind for riders.

1. Cost: A new cylinder jug can be a significant investment, especially for older motorcycles like the 1996 Yamaha YZ250.

2. Complex Installation: Installing a new cylinder jug can be a complex process that requires technical expertise and specialized tools, which may add to the overall cost.

3. Potential Compatibility Issues: Ensure that the new cylinder jug is compatible with the other components of the motorcycle, including the crankshaft, piston, and ring set, to avoid potential problems.

4. Risk of Engine Damage: Installing a larger cylinder jug can increase the risk of engine damage if not done correctly, such as piston slap or detonation.

5. Reduced Fuel Economy: A larger cylinder jug can lead to reduced fuel economy due to increased engine size and power output.

The decision to buy a Yamaha YZ250 (1996) cylinder jug with a 68mm bore depends on various factors, including your budget, technical expertise, and riding style. If you're an avid off-road racer or performance enthusiast, the increased power, better throttle response, improved engine compression, and customization opportunities may outweigh the cons. However, if you're a casual rider or have limited technical expertise and budget, it may be wise to consider the potential costs, complexity, and compatibility issues before making a purchase.

If you're considering buying a Yamaha YZ250 (1996) cylinder jug with a 68mm bore, it's essential to do your research thoroughly. Consult with experienced mechanics, read online forums, and weigh the pros and cons carefully. If you have the technical expertise, budget, and desire for increased performance, it could be an excellent investment. However, if you're unsure or have concerns, it may be best to stick with the original cylinder jug or consider other upgrades that may be more accessible and affordable.

Details:

Used CYLINDER WITH PISTON from a nice running 1996 Yamaha WR250 dirt bike, In Good shape with normal wear and other signs of use, worked good, Comes as shown.

part #: 4ew1163101a0 prices

• $102.57-$128.32

specifications cylindermotorcycleiz:

• for models: Yz250, Wr250, Yz, 250, Wr
• for makes: Yamaha
• for years: 1994-1997
• mpn: 4ew-11631-01-a0
• part type: Cylinder

payments cylindermotorcycleiz:

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

returns cylindermotorcycleiz:

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

general cylindermotorcycleiz:

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

offer cylindermotorcycleiz:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: September 29, 2025
• sold: 0

shipping cylindermotorcycleiz:

• class: Standard
• type: Fixed
• transit: 4-10 Days
• cost: $18.41
• service: Standard

seller cylindermotorcycleiz:

• city: Lake Havasu City, Arizona
• rating: 99.9%
• # reviews: 6830

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