fits model: Yz450f. make: Yamaha. year: 2010–2013.

( Brand: Pro X ), ( Manufacturer Part Number: 28.SIS2440-2 ), ( Part Type: Spring Intake Valve )
The 28.sis2440-2 Spring Kit is a crucial replacement component for the intake valve of the YZ450F model manufactured by Yamaha between 2010 and 2013. This kit is specifically designed for the Pro Intake system and is crafted from high-quality steel for durability and reliability.
The 28.sis2440-2 Spring Kit includes two springs, each meticulously engineered to provide optimal performance for your YZ450F's engine. The springs are designed to control the intake valve movement, ensuring precise intake airflow and optimal engine performance. The steel construction of the springs ensures they can withstand the rigors of off-road racing, providing consistent performance even in the most challenging conditions.
Installing the 28.sis2440-2 Spring Kit is a straightforward process, and detailed instructions are included with the kit. The springs are easy to install, and the kit comes with all the necessary parts to ensure a hassle-free installation process.
In summary, the 28.sis2440-2 Spring Kit is a must-have replacement part for any Yamaha YZ450F owner looking to maintain their bike's performance and ensure reliable operation. The high-quality steel construction, precision engineering, and easy installation make this kit an excellent choice for any off-road enthusiast.
Pros of buying a 28.sis2440-2 spring kit for the Yamaha YZ450F (2010-2013) intake valve:1. Improved engine performance: The kit includes high-quality springs that can improve the engine's power and responsiveness.
2. Enhanced throttle response: The new springs may also lead to a quicker throttle response, making the bike feel more agile.
3. Increased durability: The spring kit is made of high-quality steel, which can improve the longevity of the intake valve and reduce the risk of failure.
Cons of buying a 28.sis2440-2 spring kit for the Yamaha YZ450F (2010-2013) intake valve:1. Potential performance loss: If not installed correctly, the new springs may cause the engine to run too lean, resulting in a loss of performance.
2. Higher cost: Spring kits can be more expensive than other performance upgrades, so the cost may be a consideration for some buyers.
3. Requires professional installation: The installation of a spring kit can be a complex process, and it's recommended to have it done by a professional mechanic to avoid damaging the engine.
Conclusion:The 28.sis2440-2 spring kit for the Yamaha YZ450F (2010-2013) intake valve can provide significant performance improvements, but it's important to ensure that the installation is done correctly to avoid any potential issues. While the cost may be higher than other performance upgrades, the increased durability and improved engine performance may be worth the investment for some riders.
Recommendation:If you're considering purchasing the 28.sis2440-2 spring kit for your Yamaha YZ450F (2010-2013), it's recommended to have it installed by a professional mechanic to ensure that it's done correctly. Additionally, be sure to follow the manufacturer's instructions carefully and monitor the engine's performance to ensure that it's running smoothly.
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Buyer pays return shipping. Special designed valve springs deal with the extra weight of the stainless steel valves.
Fully rebuild able utilizing your oem retainers, bases and seals without the need of any further engine modifications. Comes as complete package of all intake valves and springs.
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Black nitrated valves offer high micro hardness while super smooth surface finish reduces friction between stem and guide. Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm.
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Keep all packaging materials and the original shipping box. 21 4n stainless steel valves for increased durability and less wear under extreme conditions.