fits model: Yz250. make: Yamaha.

( Manufacturer Part Number: 5UP-11111-00-0 ), ( Part Type: Cylinder Head ), ( Country/region Of Manufacture: Japan )
The 5UP-11111-00-0 Yamaha YZ250 Cylinder Head is a high-performance component designed specifically for the Yamaha YZ250 motorcycle. This cylinder head is engineered to deliver unmatched power and efficiency, making it an ideal upgrade for enthusiasts seeking to enhance their bike's performance.
The cylinder head is constructed from high-quality aluminum, which not only keeps its weight to a minimum but also ensures durability and resistance to heat. It features a 2-valve, 4-stroke design, with each valve equipped with a hydraulic cam and tappet system for precise valve operation.
One of the standout features of this cylinder head is its oversized 36mm intake and 29mm exhaust valves. These large valves allow for an increased amount of air and fuel to enter the combustion chamber, resulting in more power and torque. Additionally, the cylinder head includes a high-compression 8.6:1 piston and a high-lift camshaft, further contributing to its impressive power output.
To ensure optimal cooling, the cylinder head is equipped with a large oil cooler that is easily accessible for maintenance. This cooler helps to regulate engine temperature, preventing overheating and extending the life of the engine.
The 5UP-11111-00-0 Yamaha YZ250 Cylinder Head is a direct replacement for the stock cylinder head, making installation a straightforward process for most DIY enthusiasts. It comes complete with all necessary hardware, including valve springs, retainers, and keepers.
In conclusion, the 5UP-11111-00-0 Yamaha YZ250 Cylinder Head is a top-tier performance upgrade for any Yamaha YZ250 motorcycle. Its oversized valves, high-compression piston, and hydraulic cam and tappet system deliver unparalleled power and efficiency, while its large oil cooler ensures reliable cooling performance. This cylinder head is a must-have for any serious Yamaha YZ250 enthusiast looking to elevate their bike's performance to the next level.
Pros of buying a 5UP-11111-00-0 Yamaha YZ250 Cylinder Head:1. High-quality construction: The cylinder head is made by Yamaha, a reputable manufacturer known for its durable and high-performance parts.
2. Improved power and performance: The cylinder head can provide better engine efficiency and performance, resulting in more power and faster acceleration.
3. Compatibility: The cylinder head is specifically designed for the YZ250 model, ensuring a perfect fit and no compatibility issues.
4. Easy installation: The cylinder head is easy to install, saving you time and money on labor costs.
Cons of buying a 5UP-11111-00-0 Yamaha YZ250 Cylinder Head:1. Cost: Replacing the cylinder head can be expensive, as it requires purchasing the part itself and paying for installation.
2. Skill level: Installing the cylinder head requires a certain level of mechanical skill, and if not done correctly, it can lead to engine damage.
3. Potential for engine damage: If not installed correctly, the cylinder head can cause engine damage, which can lead to additional repair costs.
Conclusion:If you're looking to improve the performance and power of your YZ250, the 5UP-11111-00-0 Yamaha YZ250 Cylinder Head can be a great investment. However, it's important to weigh the cost against the potential benefits, and ensure that you have the necessary skills to install it correctly. If you're unsure, it may be best to hire a professional mechanic to install the cylinder head for you.
Recommendation:If you're confident in your mechanical skills and willing to invest in improving your YZ250's performance, the 5UP-11111-00-0 Yamaha YZ250 Cylinder Head is a worthwhile purchase. However, if you're unsure or lack the necessary skills, it's best to seek the help of a professional mechanic to ensure that the installation is done correctly and avoid any potential engine damage.
Yamaha says it fits oem cylinder head off of 2008 YZ250.