7399-W327318-19 WISECO Piston GP1200 Yamaha

Review WISECO Piston Kit-0.50mm Over To 85.00mm Bore For Yamaha for YAMAHA GP1200 1997–1999

Introducing the WiseCO 7399-W327318-19 piston kit, specifically designed for the Yamaha GP1200 model boats from 1997 to 1999. This piston kit is an essential upgrade for any watercraft enthusiast seeking superior engine performance and durability.

The WiseCO piston kit includes four new pistons, all manufactured using high-quality aluminum alloy. Each piston features a compression height of 85.00mm and a piston skirt thickness of 0.50mm, which is precisely engineered to optimize combustion efficiency and ensure a snug fit within the engine cylinder.

These pistons exhibit exceptional strength and rigidity, thanks to their unique, ribbed design. The ribs not only enhance the piston's structural integrity but also promote efficient heat dissipation, allowing the engine to operate more efficiently and reliably in various water temperatures.

Moreover, the piston kit comes with new piston rings, ensuring a perfect seal between the piston and the cylinder wall. This seal guarantees optimal engine compression and minimizes the possibility of oil leaks, contributing to the overall longevity of your watercraft's engine.

The WiseCO 7399-W327318-19 piston kit is the perfect upgrade for those seeking improved power and torque, ensuring a thrilling and exhilarating boating experience. By updating your engine with these high-performance pistons, you'll not only enhance your boat's performance but also extend its life and ensure a more satisfying time on the water.

The Wiseco 7399-W327318-19 piston kit for the 1997-1999 Yamaha GP1200 outboard motor comes with a 0.50mm overbore and 85.00mm stroke. Here are some pros and cons that may help you make an informed decision about purchasing this piston kit.

1. Enhanced Performance: The 0.50mm overbore provides increased displacement, resulting in better power and torque output. This can lead to improved acceleration and top end speed.

2. Improved Durability: Wiseco pistons are known for their high-quality materials and manufacturing processes. The piston kit includes new rings and wrist pins, which can help extend the life of the engine by reducing wear and tear.

3. Customizable: The kit is available in various sizes to fit different applications, ensuring that you get the correct piston for your specific engine.

1. Cost: Piston kits can be expensive, and this Wiseco kit is no exception. However, the increased performance and durability may be worth the investment for those who use their watercraft heavily or for commercial purposes.

2. Installation: Installing a piston kit can be a complex process and may require specialized tools and knowledge. It is recommended to have the kit installed by a professional mechanic to ensure proper installation and to avoid any potential damage to the engine.

The Wiseco 7399-W327318-19 piston kit offers improved performance and durability for the 1997-1999 Yamaha GP1200 outboard motor. However, it comes with a higher cost and the need for professional installation. If you use your watercraft heavily or for commercial purposes, the benefits of this piston kit may outweigh the costs. Otherwise, it may be worth considering other options or waiting until a major engine issue arises before investing in a piston kit.

Before making a decision, it's important to weigh the pros and cons carefully and consider your specific needs and budget. If you decide to purchase the Wiseco piston kit, make sure to have it installed by a professional mechanic to ensure proper installation and to avoid any potential damage to the engine. Additionally, ensure that you have the correct kit for your engine by double-checking the specifications before making the purchase.

Details:

All Wiseco pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. Compatibility: years: make: model: application: notes: 1999 - 2004 Yamahasv1200 wave runner suv12 1998 Yamahaxl1200 xl12 1996 Yamahara760 wave raider 760, 1997 Yamahawb760 wave blaster 1997 1999 Yamahagp1200 gp12 1997 Yamahawvt760 wave venture 760. Wiseco piston kit-0.50mm over to 85.00mm bore for 1997 - 1999 Yamaha GP1200 wave runner jet ski: bore: 85.00mm, sizing: 0.50mm oversize. Diamond turned finish from one of the many CBC computer controlled turning centers guarantees you a perfect with no size variation.

Brand: Wiseco, model number: 7399-W327318-19. Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item. This is helpful if you are buying multiple items.

specifications watercraftimp:

• for models: Gp1200
• for makes: Yamaha
• for years: 1997–1999
• brand: Wiseco
• mpn: 7399-w327318-19
• part type: Piston

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seller watercraftimp:

• rating: 99.9%
• # reviews: 74271
• city: san marcos, ca

offer watercraftimp:

• started: january 6, 2026
• price: $151.14
• item condition: New
• in stock #: 1
• sold #: 18
• options: ship-to-home
• availability: in stock

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components

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• type: fixed
• service: standard
• transit: 3-7 days
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