XQKFG3TSTP WSM Overbore Piston Exciter Kit Yamaha

Review WSM Overbore Piston Kit .75mm Over 84.75mm Yamaha Exciter 270 for YAMAHA 1999

Introducing the WSM XQKFG3TSTP Overbore Piston Kit, specifically designed for the Yamaha EXCITER 270 engine with a 75mm bore and 84.75mm stroke. This high-performance piston kit is an excellent upgrade for those seeking increased power and improved engine efficiency.

The WSM Overbore Piston Kit is meticulously crafted using the finest materials to ensure superior durability and reliability. Each piston is manufactured with forged aluminum, providing enhanced strength and resistance to heat and pressure. The piston skirts are designed with an optimized crown shape that reduces friction and enhances engine performance.

The kit also includes lightweight, yet robust connecting rods, precision-machined to ensure a perfect fit and proper clearance with the new pistons. The rods are made of high-strength steel, ensuring they can withstand the increased power output of the upgraded engine.

The WSM Overbore Piston Kit is designed to provide a significant increase in power and torque, making it an excellent choice for enthusiasts seeking to enhance the performance of their Yamaha EXCITER 270. The kit also includes new piston rings and ring grooves, ensuring a proper seal and efficient combustion process.

Installing the WSM Overbore Piston Kit is a straightforward process, making it an accessible upgrade for enthusiasts with intermediate mechanical skills. The kit includes all necessary hardware and instructions for a hassle-free installation.

In summary, the WSM XQKFG3TSTP Overbore Piston Kit is an excellent choice for those seeking to maximize the performance of their Yamaha EXCITER 270 engine. With its high-quality materials, precise manufacturing, and proven power gains, this kit is an investment that will deliver lasting results and provide countless hours of enjoyable riding.

WSM XQKFG3TSTP Overbore Piston Kit for Yamaha Exciter 270: A Detailed Analysis

The WSM XQKFG3TSTP Overbore Piston Kit is a performance upgrade designed for the Yamaha Exciter 270 ATV. This kit aims to increase power output and improve engine efficiency by increasing the piston bore size. In this analysis, we will discuss the pros and cons of purchasing this piston kit.

1. Increased Power: The overbore piston kit is designed to increase the power output of the engine. The larger piston bore size allows for more fuel and air to be burned, resulting in more power.

2. Improved Engine Efficiency: The larger piston size also allows for better combustion, resulting in improved engine efficiency. This can lead to better fuel economy and longer engine life.

3. Enhanced Performance: The increased power and improved engine efficiency can lead to enhanced performance, making the ATV faster and more responsive.

4. Upgrade Potential: Installing the overbore piston kit can be a stepping stone for future upgrades, such as high-performance camshafts or exhaust systems.

1. Cost: The overbore piston kit can be an expensive upgrade, and the cost may not be justifiable for some users, especially those who do not plan on using the ATV for high-performance applications.

2. Complex Installation: The installation process for the overbore piston kit can be complex and time-consuming. It requires the removal of the engine, cylinder head, and other components, making it a job best left to professionals or experienced DIYers.

3. Risk of Engine Damage: Installing an oversized piston kit without proper modifications and tuning can lead to engine damage. This includes the risk of piston slap, detonation, or other issues that can result in costly repairs.

4. Potential Warranty Issues: Installing aftermarket parts, such as the overbore piston kit, can void the manufacturer's warranty on the ATV.

The WSM XQKFG3TSTP Overbore Piston Kit for Yamaha Exciter 270 offers several benefits, including increased power, improved engine efficiency, and enhanced performance. However, these benefits come with a cost, both in terms of financial investment and the complexity of the installation process. Additionally, there is a risk of engine damage if the kit is not installed properly.

If you are an experienced ATV enthusiast looking for a significant power upgrade and are willing to invest time and money into the installation process, the WSM XQKFG3TSTP Overbore Piston Kit may be a worthwhile investment. However, for casual riders or those on a budget, it may be more cost-effective to consider other upgrades or modifications. Always ensure proper installation and tuning to avoid any potential engine damage.

Details:

Piston over bore amount: 0.75mm. Complete piston kit. 1999 Yamaha exciter 270 ext1200. Any fitment provided is for us spec model's.

Item must be in original undamaged unopened packaging. Oem piston bore size: 84mm. Use our shipping packaging to ship back the item, do not tape label directly original manufacturers box. These piston kits are also available in the platinum series, featuring specially hardened tops and an enhanced skirt coating for increased performance longevity.

This kit will only fit cylinders that are overbore to the bore size listed, standard pistons available in another listing. These Wsm overbore piston kits are high-quality and feature construction that meets or exceeds oem specifications. Piston diameter: 84.75mm. Stock cylinders will need to be re-bored and re-plated the appropriate size.

Rings available separately. These kits contain one piston, a ring set, wrist pin, and improved e-clips. Wrist pin bearing included: yes. Order one kit per cylinder.

This kit is for cylinders that have already been overbore.

specifications watercraftimp:

• for makes: Yamaha
• for years: 1999
• brand: Wsm
• mpn: Xqkfg3tstp
• part type: Piston
• california prop 65 warning: Warning, And Birth Defects Or Other Reproductive Harm.
• length: 3.930
• compatible model: Exciter 270
• oem piston bore size: 84 Mm
• piston over bore amount: 0.75 Mm
• piston diameter: 84.75 Mm
• package quantity: Each
• wrist pin bearing included: Yes

returns watercraftimp:

• paid by: seller
• time: 30 days
• policy: returns accepted

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• other
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offer watercraftimp:

• options: ship-to-home
• in stock #: 5
• sold #: 17
• price: $87.26
• item condition: New
• availability: in stock
• started: october 1, 2025

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components

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• transit: 2-6 days
• service: standard
• class: standard
• type: fixed

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• rating: 98.9%
• city: parkersburg, west virginia
• # reviews: 22073