WISECO 1243-W315006-73 Piston KIT-0.50MM 71.50MM

( Brand: Wiseco ), ( Manufacturer Part Number: 1243-W315006-73 ), ( Part Type: Piston )

Review WISECO Piston Kit-0.50mm Oversize To 71.50mm For Kawasaki fits JS440 1977–1992

Introducing the WISCO 1243-W315006-73 piston kit, specifically designed for Kawasaki JS440 models produced between 1977 and 1992. This high-performance piston kit is an excellent upgrade for those seeking enhanced engine power and reliability.

Each piston in this kit is meticulously crafted from forged aluminum alloy, ensuring superior strength and durability. The pistons feature a compression height of 71.50mm and a piston crown diameter of 92.00mm, ensuring a perfect fit for your Kawasaki JS440 engine.

The piston tops are machined with a dish shape, which improves the engine's combustion efficiency and power output. The piston skirts are optimally designed to minimize friction and wear, resulting in a longer piston life and smoother engine operation.

Moreover, the pistons are engineered with a 0.50mm piston ring gap, which offers improved sealing and combustion efficiency. The piston kit also includes new piston rings, made of high-quality materials, to ensure a perfect seal and reduce the likelihood of engine blowby.

Additionally, the pistons are precision-machined to ensure a perfect fit with the engine's connecting rods and cylinder bores. The piston kit comes with new piston pins and wrist pin bushings, ensuring a secure connection between the piston and the connecting rod.

By upgrading to the WISCO 1243-W315006-73 piston kit, you can expect increased horsepower and torque, improved engine response, and enhanced overall engine performance. This piston kit is also an excellent investment for those seeking to extend the life of their Kawasaki JS440 engine and ensure reliable operation for years to come.

Wiseco 1243-W315006-73 Piston Kit for 1977-1992 Kawasaki JS440: A Detailed Analysis

The Wiseco 1243-W315006-73 piston kit is designed for 1977-1992 Kawasaki JS440 Snowmobiles. This piston kit comes with a 0.50mm oversize and 71.50mm bore size. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this piston kit for your Kawasaki JS440.

1. Enhanced Performance: The oversize piston kit can provide improved combustion efficiency, resulting in increased horsepower and torque.

2. Durability: Wiseco pistons are known for their superior material quality and design, ensuring long-lasting performance.

3. Better Ring Sealing: The piston kit may improve seal between the piston and cylinder walls, reducing oil consumption and combustion losses.

4. Improved Compatibility: This piston kit is specifically designed for the Kawasaki JS440, ensuring a proper fit and function.

1. Cost: The Wiseco piston kit is more expensive compared to OEM (Original Equipment Manufacturer) alternatives.

2. Installation Complexity: Installing a piston kit can be a challenging process, requiring specialized tools and knowledge.

3. Potential Engine Modifications: Installing oversized pistons may necessitate other engine modifications to maintain proper engine balance and function.

4. Risk of Damage: The piston installation process carries a risk of damaging other engine components if not performed correctly.

The Wiseco 1243-W315006-73 piston kit for 1977-1992 Kawasaki JS440 Snowmobiles offers several advantages, including improved performance, durability, and compatibility. However, it comes with some disadvantages, such as increased cost, installation complexity, and potential engine modifications. Ultimately, the decision to purchase this piston kit depends on your specific requirements, budget, and technical expertise. If you are looking for enhanced performance and durability, and are willing to invest time, money, and effort, this piston kit could be a worthwhile investment. On the other hand, if you are looking for a cost-effective solution or prefer a low-maintenance engine, you may want to consider other options.

If you decide to purchase the Wiseco 1243-W315006-73 piston kit for your Kawasaki JS440, we recommend taking the following precautions to ensure a successful installation:

1. Properly prepare the engine and gather all necessary tools and components.

2. Carefully follow the installation instructions provided by Wiseco or a reputable mechanic.

3. Ensure that all other engine components are in good condition and properly seated before installing the piston kit.

4. Consider purchasing a piston ring set to ensure a proper seal between the piston and cylinder walls.

5. Consult with a professional mechanic if you are unsure about any aspect of the installation process.

Details:

Wiseco Piston Kit-0.50mm Oversize to 71.50mm for 1977-1992 Kawasaki JS440: Bore: 71.50mm, Sizing: 0.50mm. Diamond turned finish from one of the many CNC computer controlled turning centers guarantees you a perfect with no size variation. All Wiseco pistons and components are optimized for your vehicle to get the most value money. This is helpful if you are buying multiple items.

STANDARD and OVERSIZES are not indicated. Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item. All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life.

CW16 - ROUND WIRE PIN LOCKS 16MM PAIR. Wiseco?wide range of oversize pistons increase the life cast iron lined cylinders. S259 - Piston Pin 16mm x 2.299 Non Chromed TW. CONTENTS:2815CD - 71.50mm Ring Set.

part #: 1243w31500673 price

• $183.49

specifications pistondon:

• for models: Js440
• for makes: Kawasaki
• for years: 1977-1992
• brand: Wiseco
• mpn: 1243-w315006-73
• part type: Piston

returns pistondon:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer pistondon:

• sold: 0
• options: Ship-to-home
• quantity: 3
• availability: In Stock
• started: February 19, 2026

payments pistondon:

• credit card: Visa
• other
• wallet: Apple-pay

seller pistondon:

• rating: 99.9%
• city: Sparks, NV
• # reviews: 78111

shipping pistondon:

• transit: 2-6 Days
• service: Standard
• class: Standard
• cost: $0.00
• type: Fixed

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New

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