WSM-5647-484024 WSM Standard Piston Waverunner Kit WR650 Lx

Review WSM Standard Series Piston Kit 77.25mm Yamaha Waverunner for YAMAHA WR650 LX 1990–1993

Introducing the WSM WSM-5647-484024 Standard Piston Kit, specifically designed for the Yamaha Waverunner LX model with a displacement of 650cc and a piston diameter of 77.25mm, manufactured for the years 1990 to 1993. This piston kit is a must-have for boat owners seeking to keep their watercraft in optimal condition or those planning for an engine upgrade.

The WSM piston kit comprises a complete set of four high-performance pistons, each meticulously engineered to deliver superior power, efficiency, and reliability. Crafted using premium materials, these pistons feature a forged construction that ensures superior strength and durability. They are designed with a precise piston skirt profile, which enables a snug fit in the cylinder bore for minimal blow-by, thereby reducing engine oil consumption and enhancing combustion efficiency.

The piston crowns are engineered with a dish shape for optimal combustion, ensuring efficient fuel burning and improved engine performance. The piston pins are made from high-tensile steel, providing superior strength and resistance to wear and tear. Each piston is precision-machined to ensure perfect fitment in the engine and optimal clearance with other components.

This WSM piston kit is an excellent choice for boat owners looking to upgrade their engine, restore a classic watercraft, or simply maintain their Yamaha Waverunner LX to keep it running at its best. The kit includes all necessary hardware, making installation a straightforward process for the average DIY enthusiast. For added peace of mind, the pistons come with a warranty against manufacturing defects.

In conclusion, the WSM WSM-5647-484024 Standard Piston Kit is an essential investment for any owner of a Yamaha Waverunner LX with a 650cc engine and 77.25mm piston diameter, manufactured between 1990 and 1993. Offering superior power, efficiency, and reliability, these pistons are designed to help you get the most out of your watercraft and ensure many more hours of enjoyable boating.

Pros and Cons of Buying a WSM WSM-5647-484024 Standard Piston Kit for a 1990-1993 Yamaha Waverunner LX with WR650 Engine

a. Enhanced Performance: Replacing the stock pistons with high-performance aftermarket pistons can lead to increased horsepower and torque, improving the overall performance of your watercraft.

b. Durability: This piston kit is specifically designed for the Yamaha Waverunner LX with WR650 engine, ensuring a perfect fit and compatibility.

c. Engine Longevity: Upgrading to a higher quality piston kit can help extend the life of your engine by reducing wear and tear.

a. Cost: Aftermarket piston kits can be quite expensive compared to the cost of the stock pistons. This may not be a viable option for those on a tight budget.

b. Installation Complexity: Installing a new piston kit involves removing the engine, which can be a challenging task for those without mechanical expertise. It is recommended to have the installation done by a professional.

The decision to buy a WSM WSM-5647-484024 Standard Piston Kit for a 1990-1993 Yamaha Waverunner LX with WR650 engine depends on your budget and priorities. If you're looking for improved performance and engine longevity, this piston kit could be a worthwhile investment. However, if cost is a concern or you're not confident in your mechanical abilities, it may be best to stick with the stock pistons.

If you've weighed the pros and cons and decided that this piston kit is the right choice for you, be sure to purchase it from a reputable dealer to ensure authenticity and quality. Additionally, consider having the installation done by a professional to minimize the risk of complications.

Details:

Brand: Wsm, model number: WSM-5647-484024. Compatibility, Yamaha super jet sj650 1990 -1993, VCR wrb650 1991, waverunner iii wra650 1990 -1996, Lx WR650 1990 -1993. Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item.

Wsm standard series piston kit 77.25mm Yamaha waverunner Lx WR650 1990 -1993: kit contains: 1 one piston as well rings, pin and clips to match piston bore size: 77.25mm, actual contents may vary from photo, quality construction are exact oem specifications. This is helpful if you are buying multiple items.

specifications watercraftimp:

• for models: Wr650, Lx
• for makes: Yamaha
• for years: 1990–1993
• brand: Wsm
• mpn: Wsm-5647-484024
• part type: Piston

returns watercraftimp:

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

seller watercraftimp:

• rating: 99.9%
• # reviews: 84729
• city: boise, id

payments watercraftimp:

• other
• wallet: paypal
• credit card: mastercard

shipping watercraftimp:

• transit: 3-6 days
• service: standard
• type: fixed
• class: standard

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components

offer watercraftimp:

• sold #: 15
• price: $81.14
• item condition: New
• availability: in stock
• in stock #: 1
• started: may 7, 2026
• options: ship-to-home