SD787RFINTEK821 NAMURA Rfi Top End Rebuild Pistons Kit Gtx

Review NAMURA Sea-doo Rfi 787 Top End Rebuild Kit Pistons 82mm for SEA-DOO GTX 800 1999–2001

Introducing the Namura SD787R Fintek821 Top End Rebuild Kit, specifically designed for Sea-Doo GTX RFI 800 engines with a 787 top end and 82mm pistons. This top end rebuild kit is suitable for Sea-Doo models produced between 1999 and 2001.

The Namura SD787R Fintek821 Top End Rebuild Kit is a comprehensive solution for those looking to breathe new life into their watercraft engine. This kit includes all the necessary components to rebuild the top end of your engine, ensuring optimal performance and reliability.

The heart of this kit are the high-quality, 82mm pistons. These pistons are precision-engineered to provide superior compression and power output, resulting in improved acceleration and top speed. The pistons are also designed to minimize friction and wear, ensuring long-lasting performance.

The kit also includes cylinder liners, which provide a smooth, durable surface for the pistons to move against. These liners are made from a high-strength material that can withstand the rigors of watercraft use, ensuring a long service life.

Additionally, the Namura SD787R Fintek821 Top End Rebuild Kit includes new rings, which are essential for sealing the combustion chamber and preventing fuel and oil from leaking into the crankcase. These rings are designed to provide a tight seal, ensuring optimal engine efficiency and reducing the need for frequent oil changes.

The kit also includes new valves, valve guides, and valve seals. These components are crucial for ensuring proper engine function and maintaining optimal performance. The valves are designed to provide excellent flow and durability, while the guides and seals ensure a tight seal and prevent leaks.

Rounding out the kit are new camshafts and lifters. These components are responsible for controlling the engine's intake and exhaust cycles, ensuring optimal power output and engine efficiency. The camshafts and lifters are precision-engineered to provide long-lasting performance and reliability.

In summary, the Namura SD787R Fintek821 Top End Rebuild Kit is a comprehensive solution for those looking to rebuild the top end of their Sea-Doo GTX RFI 800 engine with 787 top end and 82mm pistons. This kit includes high-quality components, such as pistons, cylinder liners, rings, valves, valve guides, valve seals, camshafts, and lifters, ensuring optimal performance and reliability for your watercraft. This kit is suitable for Sea-Doo models produced between 1999 and 2001.

Buying a Namura SD787R Fintek821 top end rebuild kit for a Sea-Doo GTX RFI 800 with pistons of size 82mm, suitable for the models from 1999 to 2001, comes with both advantages and disadvantages. Here's a detailed analysis:

1. Improved Performance: A top end rebuild kit can enhance the performance of your Sea-Doo engine by replacing worn-out components with new ones. This can lead to better acceleration, increased top speed, and smoother operation.

2. Cost-Effective: Rebuilding the engine instead of buying a new one can save you a significant amount of money, especially if the engine is still in good condition otherwise.

3. Long-Term Reliability: By investing in a high-quality rebuild kit, you can extend the life of your engine and avoid the need for frequent repairs.

1. Time-Consuming: Rebuilding an engine is a labor-intensive process that requires a good deal of expertise and patience. If you're not mechanically inclined, it might be more convenient to purchase a remanufactured engine or a new one.

2. Risk of Damage: During the rebuild process, there's a risk that other parts of the engine could be damaged or that new parts could be installed incorrectly. This could lead to further repair costs.

3. Quality Concerns: Not all rebuild kits are created equal. It's essential to ensure that you're purchasing a high-quality kit from a reputable supplier to ensure that you're getting the best possible parts.

A Namura SD787R Fintek821 top end rebuild kit for a Sea-Doo GTX RFI 800 can be a cost-effective and performance-enhancing solution for engines in good condition. However, it requires a significant investment of time and expertise, and there's a risk of damage or quality concerns. Ultimately, the decision to purchase this kit depends on your mechanical abilities, budget, and the current condition of your engine.

If you're confident in your mechanical abilities and have the time and resources to complete the rebuild process, a Namura SD787R Fintek821 top end rebuild kit for your Sea-Doo GTX RFI 800 can be a worthwhile investment. However, if you're not mechanically inclined, it might be more convenient and cost-effective to purchase a remanufactured engine or a new one from a reputable dealer.

Details:

Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy. Includes 2 pistons, rings, wrist pins, cir clips, pin bearings, and a top end gasket kit. Pistons are for the standard bore 82mm, actual size of pistons is 81.90mm. Brand new Namura top end engine rebuild kit.

High-silicon content hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life and reduced scuffing. Mos2 Teflon/molybdenum coated skirts perform at the highest standards, reducing friction and heat for added power longevity. Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon/molybdenum coated skirts. High-quality cast pistons made with excellent materials to precise specifications.

Made to meet or exceed oem specifications.

specifications watercraftimp:

• for models: Gtx, 800
• for makes: Sea-doo
• for years: 1999–2001
• brand: Namura
• mpn: Sd787rfintek821
• part type: Piston
• engine type: 2-stroke
• oe/oem part number: 290887300, 290888410, 420888410
• piston size: 81.90mm
• piston material: Hypereutectic Cast Aluminum
• country/region of manufacture: Taiwan
• cylinder bore size: Standard Bore 82mm

returns watercraftimp:

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

seller watercraftimp:

• city: traverse city, michigan
• rating: 99.3%
• # reviews: 5822

offer watercraftimp:

• prices: $159.00–$229.00
• item condition: New
• sold #: 26
• in stock #: 5
• availability: in stock
• started: may 30, 2025
• options: ship-to-home

shipping watercraftimp:

• transit: 4-8 days
• carrier: usps
• service: usps ground advantage, usps priority mail, usps priority mail express
• type: fixed
• class: standard, expedited

payments watercraftimp:

• wallet: paypal
• credit card: visa
• other

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components