5477-W323474-77 WSM Top End Standard Rfi Jet Ski Kit Gti

Review WSM Top End Kit-standard Bore 82.00mm For Sea-doo Le Rfi Jet Ski for SEA-DOO GTI 2003–2005

Introducing the WSM 5477-W323474-77 Top End Kit, specifically designed for Sea-Doo GTI LE RFI jet skis manufactured between 2003 and 2005. This top-tier performance upgrade is an excellent choice for those seeking improved power, acceleration, and overall riding experience.

The WSM Top End Kit includes high-performance cylinder heads that have undergone rigorous testing and development to deliver enhanced combustion efficiency and increased power output. The cylinder heads feature CNC-machined ports for optimized fuel and air flow, and the intake and exhaust ports have been meticulously designed to reduce turbulence for superior engine performance.

The kit also includes high-performance pistons that offer increased compression ratio, resulting in more power and torque. These pistons are made from a durable material that can withstand the rigors of high-performance riding, ensuring long-lasting reliability.

The WSM Top End Kit also features high-performance camshafts that provide increased lift and duration for improved power delivery and throttle response. These camshafts have been carefully designed to optimize the engine's power band, providing a smooth and powerful riding experience.

Additionally, the kit includes high-performance intake and exhaust valves that offer improved flow and reduced restriction, allowing for more air and fuel to enter the engine and more exhaust gases to exit. These valves are made from a durable material that can withstand the high temperatures and pressures of jet ski engines, ensuring long-lasting reliability.

The WSM Top End Kit is easy to install, with step-by-step instructions provided to guide you through the process. Each component is precision-machined and meticulously inspected to ensure the highest quality and fitment. The kit is also backed by a manufacturer's warranty, providing peace of mind and protection against any defects.

In summary, the WSM 5477-W323474-77 Top End Kit is an excellent choice for those seeking improved power, acceleration, and overall riding experience on their Sea-Doo GTI LE RFI jet ski. With high-performance cylinder heads, pistons, camshafts, intake and exhaust valves, and easy installation, this kit is a must-have for any serious jet ski enthusiast.

Pros and Cons of Buying WSM 5477-W323474-77 Top End Kit for 2003-2005 Sea-Doo GTI LE RFI Jet Ski

a. Improved Performance: This top end kit is designed to provide better combustion efficiency, resulting in increased horsepower and improved overall performance.

b. Enhanced Fuel Economy: By improving the combustion process, this kit can help to reduce fuel consumption, saving you money in the long run.

c. Customization: Installing this kit allows you to personalize your Sea-Doo jet ski and stand out from other riders.

d. Durability: The components in this kit are designed to withstand the rigors of high-performance jet skiing.

a. Complex Installation: Installing this kit requires a certain level of mechanical expertise and may be time-consuming for those without experience.

b. Cost: The price of this kit may be a significant investment for some riders, especially those on a budget.

c. Risk of Damage: Any modification to a jet ski carries some risk of damage, and installing a top end kit increases this risk due to the high-performance nature of the components.

d. Voiding Warranty: Installing aftermarket parts like this top end kit may void the manufacturer's warranty on your Sea-Doo jet ski.

The WSM 5477-W323474-77 Top End Kit for 2003-2005 Sea-Doo GTI LE RFI Jet Ski offers several benefits for those seeking improved performance, enhanced fuel economy, and the ability to customize their watercraft. However, the complex installation process, significant cost, increased risk of damage, and potential voiding of the manufacturer's warranty are important considerations. Ultimately, the decision to purchase this kit depends on your personal preferences, mechanical expertise, and budget.

If you are an experienced jet ski enthusiast seeking high performance and are comfortable with the installation process and associated risks, the WSM 5477-W323474-77 Top End Kit may be an excellent investment for you. However, if you are new to jet ski modifications or have limited mechanical expertise, it may be best to consider other, less complex upgrades or to seek professional assistance for this modification.

Details:

I need to exchange an item.: brand: Wsm, model number: 5477-W323474-77. Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.

Compatibility: years: make: model: application: notes: 1999 - 2000 Sea-dosages rfi, 2002 Sea-digits 2005 Sea-doo3d 2003 2005 Sea-digit le rfi. Wsm top end kit-standard bore 82.00mm for 2003 - 2005 Sea-doo Gti le rfi jet ski: complete top-end kit contains: top-end gaskets and pistons to rebuild one motor piston size: 82.00mm, actual contents may vary from photo, quality construction are exact oem specifications.

specifications watercraftimp:

• for models: Gti
• for makes: Sea-doo
• for years: 2003–2005
• brand: Wsm
• mpn: 5477-w323474-77
• part type: Jet

shipping watercraftimp:

• type: fixed
• service: standard
• class: standard
• transit: 2-5 days

offer watercraftimp:

• options: ship-to-home
• availability: in stock
• price: $217.22
• item condition: New
• sold #: 18
• in stock #: 1
• started: january 22, 2026

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components

returns watercraftimp:

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

payments watercraftimp:

• other
• wallet: google-pay
• credit card: visa

seller watercraftimp:

• city: boise, id
• # reviews: 75774
• rating: 99.8%