1. Personal Watercraft Engines, Impellers & Components Parts
  2. sku: 5790327033127622
  3. WSM 5251-W323022-31

5251-W323022-31 WSM Top End Waverunner Kit GP800A GP800R Std

fits model: Gp800a, Gp800r, Std. make: Yamaha. year: 2001–2005.

5251-W323022-31 WSM Top End Waverunner Kit GP800A GP800R Std
Product Aspects
BrandWSM
Manufacturer Part Number5251-W323022-31

Review WSM Top End Kit-std. Bore 79.90mm For Yamaha Waverunner for YAMAHA GP800A GP800R STD 2001–2005

Introducing the WSM 5251-W323022-31 Top End Kit, specifically designed for the Yamaha GP800A and GP800R waverunners manufactured between 2001 and 2005. This top end kit is an essential upgrade for watercraft enthusiasts seeking enhanced performance and reliability for their vessels.

The WSM 5251-W323022-31 Top End Kit comprises high-quality, precision-crafted components that are engineered to fit perfectly and deliver superior results. Each part is meticulously manufactured to exacting standards, ensuring a seamless installation and optimal engine functionality.

This kit includes the following components:

1. Cylinder Head: The cylinder head is the heart of the engine, and this top end kit comes with an advanced design cylinder head that offers improved combustion efficiency and increased power output. Its durable construction guarantees long-lasting performance and minimal maintenance requirements.

2. Camshaft: The camshaft is responsible for opening and closing the engine's valves at precisely the right time. The WSM 5251-W323022-31 Top End Kit comes with a high-performance camshaft that provides increased valve lift and duration, resulting in improved engine breathing and more power.

3. Crankshaft: The crankshaft converts the linear motion of the pistons into rotational force that propels the waverunner. This top end kit includes a robust and reliable crankshaft that ensures smooth and consistent power delivery.

4. Pistons: The pistons are the primary components that transform the engine's power into motion. The WSM 5251-W323022-31 Top End Kit comes with high-strength, lightweight pistons that offer improved compression and enhanced power output.

5. Connecting Rods: The connecting rods transfer the force from the crankshaft to the pistons. This top end kit includes strong and durable connecting rods that provide reliable and efficient power transfer.

6. Cylinder Liners: The cylinder liners provide a smooth and wear-resistant surface for the pistons to move against. The WSM 5251-W323022-31 Top End Kit comes with premium cylinder liners that ensure a perfect seal and minimal friction, resulting in improved engine performance and longer engine life.

7. Gaskets: The gaskets help create a seal between the engine components to prevent leaks and maintain engine pressure. This top end kit includes all necessary high-quality gaskets for a successful installation.

By upgrading your Yamaha GP800A or GP800R with the WSM 5251-W323022-31 Top End Kit, you can enjoy increased horsepower, improved engine efficiency, and smoother overall performance. This kit is an excellent investment for watercraft enthusiasts who demand the best from their waverunner and want to get the most out of their engine.

Top End Kit Purchase Decision for 2001-2005 Yamaha GP800A/GP800R Waverunners (WSM 5251-W323022-31)

Introduction:

The WSM 5251-W323022-31 top end kit is a popular choice among Yamaha GP800A and GP800R waverunner owners looking to improve engine performance. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this top end kit.

Pros:

1. Enhanced Horsepower: The primary benefit of this top end kit is the potential increase in horsepower. The upgraded components, such as the high-performance pistons and cylinders, can significantly improve engine efficiency and output.

2. Improved Throttle Response: The top end kit can provide quicker throttle response, making the waverunner more responsive and agile, which is valuable for water sports enthusiasts.

3. Increased Durability: The high-quality materials used in the top end kit can lead to increased engine longevity, as the components are designed to withstand the demands of high-performance use.

Cons:

1. Cost: The WSM 5251-W323022-31 top end kit comes with a substantial price tag. The investment required for this upgrade may not be feasible for all waverunner owners.

2. Installation Complexity: Installing the top end kit requires expertise and specialized tools. Hiring a professional to perform the installation can add to the overall cost.

3. Potential Compatibility Issues: While the top end kit is designed for the 2001-2005 Yamaha GP800A and GP800R models, there may be compatibility issues with certain engines or components. It is crucial to verify compatibility before making a purchase.

Conclusion:

The WSM 5251-W323022-31 top end kit offers several advantages, including increased horsepower, improved throttle response, and increased durability. However, it also comes with drawbacks such as a high cost, installation complexity, and potential compatibility issues.

Recommendation:

For those who prioritize performance and are willing to invest in a high-quality upgrade, the WSM 5251-W323022-31 top end kit is an excellent choice. However, potential buyers should carefully consider the cost, installation complexities, and compatibility issues before making a decision. It is recommended to consult with a professional mechanic or dealer to ensure compatibility and to understand the full implications of the upgrade.

Details:

This is helpful if you are buying multiple items. Wsm top end kit-std.: brand: Wsm, model number: 5251-W323022-31. Piston walls are treated with a nonabrasive coating which reduces heat and friction for extended life.

Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item. They are designed to prevent skirt and ring groove breakage. Wsm platinum series top-end kit contains: top-end gaskets and pistons to rebuild one motor piston bore size: 79.90mm, actual contents may vary from photo, pistons are made of high strength hardened aluminum.

Compatibility: years: make: model: application: notes: 1998 - 2000 Yamahagp800 waverunner gp8 2001 2005 Yamahagp800a GP800R, 2002 2004 Yamahaxa800a xlt8 2000 2001 Yamahaxa800 xl800. Bore 79.90mm for 2001 - 2005 Yamaha GP800A waverunner GP800R: bore: 79.90mm, sizing: standard.

specifications watercraftimp:

  • for models: Gp800a, Gp800r, Std
  • for makes: Yamaha
  • for years: 2001–2005
  • brand: Wsm
  • mpn: 5251-w323022-31

general watercraftimp:

  • category: Watercraft Parts > Engines > Impellers Components

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  • availability: in stock
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  • price: $330.59
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  • sold #: 27
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  • started: april 26, 2025

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