fits make: Yamaha. year: 1999.



| Brand | WSM |
|---|---|
| Manufacturer Part Number | EQWUBB6TYK |
| Type | PISTON KIT |
| Length | 4.050 |
| Compatible Model | WAVERUNNER XL12 |
| Skuid | EQWUBB6TYK-1123-8 |
| Oem Piston Bore Size | 84 MM |
| Piston Over Bore Amount | 0.5 MM |
| Piston Diameter | 84.5 MM |
| Includes Wrist Pin Bearing | YES |
| Package Quantity | EACH |
The WSM Equwubb6tyk Overbore Piston Kit is a high-performance upgrade for your Yamaha Waverunner XL12 engine. This piston kit is specifically designed to increase power output and efficiency, making it an excellent choice for riders looking to enhance the performance of their watercraft.
At the heart of this piston kit is the oversized 5mm piston, which increases displacement and allows for more fuel and air to be burned during each combustion cycle. The piston is made from a strong and durable forged material, ensuring long-lasting performance and reliability. The piston skirt is also optimized for a tight ring seal, reducing the amount of compression loss and ensuring efficient power transfer.
The piston is paired with an 84.5mm bore size cylinder, which increases the overall volume of the engine. This results in more power being generated, improving acceleration and top speed. The cylinder is machined to precise tolerances, ensuring a perfect fit and eliminating any potential for piston slap or ring wear.
The WSM Equwubb6tyk Overbore Piston Kit also includes matching piston rings and an assembled connecting rod. The piston rings are made from top-quality materials and are precision designed to provide a perfect seal and minimize blowby. The connecting rod is also forged from a strong material and is precision balanced, ensuring smooth power transfer and reducing vibration.
Installation of this piston kit is relatively straightforward and can be done at home with some basic tools and DIY skills. A detailed installation manual is included in the kit, and WSM offers technical support for any questions or concerns.
In summary, the WSM Equwubb6tyk Overbore Piston Kit is a high-quality upgrade for your Yamaha Waverunner XL12 engine. The oversized piston and cylinder combined with high-quality piston rings and connecting rod, result in increased power output, improved efficiency, and enhanced performance. With precise machining and materials, this kit provides a reliable and long-lasting solution for those looking to get the most out of their watercraft.
The WSM Equwubb6tyk Overbore Piston Kit is an aftermarket accessory specifically designed for the Yamaha Waverunner XL12. This kit is engineered to increase the engine's performance by increasing the cylinder bore size, ultimately leading to enhanced power output. In this analysis, we will discuss the potential advantages and disadvantages of investing in this aftermarket piston kit for your Yamaha Waverunner XL12.
Pros:1. Increased Horsepower: The WSM Equwubb6tyk Overbore Piston Kit is designed to deliver an increase in power output, which can result in a more exhilarating riding experience. The larger bore size allows for more fuel and air to be burnt during each combustion cycle, yielding higher horsepower and torque.
2. Improved Engine Efficiency: Thanks to the optimized combustion process, this overbore piston kit can improve your engine's overall efficiency. The enhanced efficiency can translate into better fuel economy, reduced emissions, and overall engine longevity.
3. Customizable Power: The refined engine performance delivered by the WSM Equwubb6tyk Overbore Piston Kit can cater to the preferences of various riders. Those who prioritize acceleration and top-end power gains can benefit significantly from this modification.
Cons:1. Cost: Overbore piston kits tend to be more expensive compared to standard performance mods. This might be a concern for budget-conscious riders or those who are new to the sport.
2. Complex Installation: Installing this piston kit is considered a more advanced modification. The installation process may require expert mechanical skills, or it might necessitate the assistance of a professional mechanic. improper installation can potentially damage your engine.
3. Off-Warranty Concerns: Installing aftermarket parts like the WSM Equwubb6tyk Overbore Piston Kit may invalidate your Yamaha Waverunner's factory warranty. Be sure to understand the implications before making your purchase.
Conclusion:The WSM Equwubb6tyk Overbore Piston Kit for Yamaha Waverunner XL12 carries both advantages and disadvantages. On the positive side, it can offer increased horsepower, improved engine efficiency, and customizable power levels. On the other hand, it might warrant a considerable upfront investment and could potentially complicate your installation process.
Recommendation:For those who value performance and power in their Yamaha Waverunner XL12, the WSM Equwubb6tyk Overbore Piston Kit is an appealing investment. If the additional horsepower and customization opportunities outweigh your concerns regarding costs, complex installation, and potential warranty issues, this kit is certainly worth considering. However, for beginners or riders seeking simpler modifications, it might be wise to explore other performance upgrade options first. Ultimately, proceed with careful consideration of your priorities, needs, and resources before making a decision.
These kits contain one piston, a ring set, wrist pin, and improved e-clips. Order one kit per cylinder. This kit will only fit cylinders that are overbore to the bore size listed, standard pistons available in another listing. Any fitment provided is for us spec model's.
Use our shipping packaging to ship back the item, do not tape label directly original manufacturers box. This kit is for cylinders that have already been overbore. 1999 Yamaha waverunner XL12 xa1200 ltd. Stock cylinders will need to be re-bored and re-plated the appropriate size.
These Wsm overbore piston kits are high-quality and feature construction that meets or exceeds oem specifications. Item must be in original undamaged unopened packaging. Piston diameter: 84.5mm. Oem piston bore size: 84mm.
Rings available separately. These piston kits are also available in the platinum series, featuring specially hardened tops and an enhanced skirt coating for increased performance longevity. Complete piston kit. Wrist pin bearing included: yes.
Piston over bore amount: 0.5mm.
