CN5IP1D1N4 WSM Overbore Piston Waverunner Kit XL12 Yamaha

Review WSM Overbore Piston Kit .25mm Over 84.25mm Yamaha Waverunner for YAMAHA XL12 1999

The WSM CN5IP1D1N4 Overbore Piston Kit is specifically designed for Yamaha Waverunner XL12 models with a 25mm stroke and a bore size of 84.25mm. This piston kit is an excellent upgrade for those seeking improved engine performance and longevity.

Each piston in this kit is meticulously crafted using high-quality materials, including a forged aluminum design that ensures superior strength and durability. The piston skirt is engineered to minimize friction and provide better ring seal, leading to improved compression and power.

Additionally, the piston tops feature a precision-machined combustion chamber and D-ring belt dressing grooves. The combustion chamber is designed to optimize fuel-air mixture for maximum ignition efficiency, resulting in increased power output. The D-ring belt dressing grooves simplify maintenance by allowing you to apply belt dressing directly to the piston, ensuring the belt runs smoothly and lasts longer.

Each piston in the WSM CN5IP1D1N4 Overbore Piston Kit comes with a matching ring set, which includes a compression ring, oil control ring, and top ring. These rings are designed to provide optimal sealing and efficient engine operation. The compression rings, in particular, deliver a better seal for improved compression, resulting in increased horsepower and overall engine performance.

This overbore piston kit is a straightforward upgrade that requires minimal modifications to the engine. Each piston is precision- machined to exacting tolerances to ensure a perfect fit and smooth installation. By upgrading to this piston kit, you can expect improved engine performance, longer piston life, and increased horsepower, making it an excellent investment for your Yamaha Waverunner XL12.

Overboring a piston kit on a Yamaha Waverunner XL12 with a WSM CN5IP1D1N4 kit to increase its displacement from 842cc to a larger size can offer several advantages and disadvantages:

1. Increased power output: By increasing the piston bore, the engine's displacement is enlarged, leading to an increase in power output. This can result in better topspeed, faster acceleration, and enhanced overall performance.

2. Improved engine efficiency: A larger displacement piston kit can lead to improved combustion efficiency. This can result in better fuel economy and reduced emissions.

3. Customization: An overbore kit offers a way to customize your watercraft engine to your specific preferences. It allows you to adjust the power and performance of your engine to suit your riding style and needs.

1. Cost: Overboring a piston kit and the accompanying modifications can be expensive. The cost of the kit itself, along with any necessary modifications to the engine, can add up quickly.

2. Complex installation: Installing an overbore piston kit requires a high level of expertise and technical knowledge. It can be a complex and time-consuming process, and improper installation can lead to serious engine damage.

3. Engine compatibility: Not all engines are suitable for an overbore piston kit. It is essential to ensure that the engine's components are compatible before proceeding with the installation. Failure to do so can result in costly repairs or unexpected engine damage.

An overbore piston kit with a WSM CN5IP1D1N4 can offer enhanced power output, improved engine efficiency, and the ability to customize your engine. However, it also comes with the potential for higher costs, complex installation processes, and the risk of engine compatibility issues.

If you are considering an overbore piston kit for your Yamaha Waverunner XL12, it is crucial to carefully consider the pros and cons. If you have the necessary expertise, the financial resources, and are willing to take on the risks, an overbore kit could be an excellent investment. However, if you are unsure or uncomfortable with the technical aspects of the installation process, it may be wiser to consider other modifications or to consult with a professional. Additionally, it's essential to ensure that the engine is compatible with the kit and that all necessary modifications are made during the installation process to avoid potential damage to the engine.

Details:

Oem piston bore size: 84mm. Order one kit per cylinder. Rings available separately. Any fitment provided is for us spec model's.

Piston diameter: 84.25mm. These kits contain one piston, a ring set, wrist pin, and improved e-clips. This kit is for cylinders that have already been overbore. These piston kits are also available in the platinum series, featuring specially hardened tops and an enhanced skirt coating for increased performance longevity.

These Wsm overbore piston kits are high-quality and feature construction that meets or exceeds oem specifications. Stock cylinders will need to be re-bored and re-plated the appropriate size. Complete piston kit. Wrist pin bearing included: yes.

Piston over bore amount: 0.25mm. Item must be in original undamaged unopened packaging. Use our shipping packaging to ship back the item, do not tape label directly original manufacturers box. This kit will only fit cylinders that are overbore to the bore size listed, standard pistons available in another listing.

1999 Yamaha waverunner XL12 xa1200 ltd.

specifications watercraftimp:

• for makes: Yamaha
• for years: 1999
• brand: Wsm
• mpn: Cn5ip1d1n4
• type: Piston Kit
• length: 4.500
• compatible model: Waverunner Xl12
• skuid: Cn5ip1d1n4-1123-8
• oem piston bore size: 84 Mm
• piston over bore amount: 0.25 Mm
• piston diameter: 84.25 Mm
• includes wrist pin bearing: Yes
• package quantity: Each

offer watercraftimp:

• sold #: 26
• started: january 2, 2025
• availability: in stock
• prices: $90.94–$411.31
• item condition: New
• options: ship-to-home
• in stock #: 5

payments watercraftimp:

• other
• credit card: mastercard
• wallet: apple-pay

shipping watercraftimp:

• service: standard
• transit: 5-9 days
• class: standard
• type: fixed

returns watercraftimp:

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

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components

seller watercraftimp:

• rating: 98.5%
• city: parkersburg, west virginia
• # reviews: 18306