NAMURA TECHNOLOGIES NW-40000R Standard Piston Rings Pwc 703624241278 81MM

( Brand: Namura Technologies ), ( Manufacturer Part Number: NW-40000R ), ( Part Type: Ring Piston ), ( Country Of Origin: Taiwan ), ( UPC: 703624241278 )

Review NAMURA TECHNOLOGIES Sets Standard Bore Piston Rings For Yamaha Pwc Fits 81mm fits 700 1993–2020

Introducing the Namura NW-40000R Standard Piston Rings, specifically designed for Yamaha 700 Personal Watercraft models from 1993 to 2020 with an 81mm bore size. These high-quality piston rings are engineered to provide optimal performance and longevity for your watercraft engine.

The NW-40000R piston rings are manufactured using advanced materials and precision machining techniques. These rings feature a standard compression ring design, which includes a top ring, second ring, and oil scraper ring. Each ring is meticulously crafted to ensure a perfect fit and sealing ability, providing maximum compression and preventing harmful leakage.

The top ring is responsible for maintaining the proper compression ratio in the combustion chamber. This ring is designed with a precise ring groove width and a uniform ring land height to ensure even contact with the cylinder wall. The top ring's material composition includes a high-tensile alloy steel for durability and excellent resistance to wear and tear.

The second ring, also known as the compression-scavenging ring, helps in compressing the air-fuel mixture during the combustion process. It also facilitates the scavenging process by aiding in the removal of exhaust gases from the combustion chamber. The second ring is manufactured with a nickel-chromium alloy to ensure excellent compressive strength and wear resistance.

The oil scraper ring, located at the bottom of the piston ring set, plays a crucial role in maintaining the engine's oil lubrication system. This ring is designed to ensure that the engine's crankcase is properly lubricated while minimizing oil consumption. The oil scraper ring is made of a high-quality, wear-resistant material to ensure long-lasting performance.

The Namura NW-40000R Standard Piston Rings for Yamaha 700 Personal Watercraft are designed to meet or exceed OEM specifications. They are also backed by Namura's commitment to quality and customer satisfaction. Installing these piston rings in your Yamaha 700 PWC engine can help improve its overall performance, efficiency, and longevity.

Buying Namura NW-40000R standard piston rings for a Yamaha 700 PWC (Personal Watercraft) model from 1993 to 2020 with an 81mm bore size involves considering both advantages and disadvantages.

1. OEM Quality: Namura is a well-known aftermarket manufacturer, and their piston rings are designed to meet original equipment manufacturer (OEM) specifications. This ensures a proper fit and reliable performance.

2. Cost-Effective: Aftermarket piston rings are typically less expensive than OEM options, making them an attractive choice for those looking to save money.

3. Availability: Aftermarket parts are often more readily available than OEM parts, especially for older models like the Yamaha 700 PWC.

1. Potential Quality Variations: Since aftermarket parts are manufactured by different companies, there may be variations in quality. It's essential to choose a reputable supplier like Namura to minimize the risk of receiving subpar parts.

2. Lack of Warranty: OEM parts usually come with a warranty, providing peace of mind and potential savings if the part fails. Aftermarket parts, on the other hand, typically do not come with a warranty.

3. Installation Complexity: Installing piston rings can be a complex process that requires specialized tools and expertise. Improper installation could lead to engine damage or poor performance.

The decision to buy Namura NW-40000R standard piston rings for a Yamaha 700 PWC depends on your priorities. If cost-effectiveness and availability are your main concerns, and you're confident in your ability to install the rings correctly, then an aftermarket option may be the best choice for you. However, if you prefer the peace of mind that comes with OEM parts and warranties, or if you have concerns about potential quality variations, you might consider paying more for the OEM option.

If you decide to go with the aftermarket option, ensure you purchase from a reputable supplier like Namura to minimize the risk of receiving subpar parts. Additionally, consider seeking professional assistance from a certified mechanic for the installation process to ensure proper fitting and performance.

Details:

Manufactured by Namura. Enough to replace the rings on two pistons. 1993 Wave Runner Pro VXR 700 WRB700. Rings are for standard bore size - 81.00mm.

Compatible with Yamaha model's below: 1993 Wave Blaster 700 WB700. 1994 FX1 FX700. Made in Taiwan. Includes four compression rings you get exactly what is pictured.

part #: nw40000r prices

• $17.96-$28.95

specifications perwatercraft:

• for models: 700
• for makes: Yamaha
• for years: 1993-2020
• brand: Namura Technologies
• mpn: Nw-40000r
• part type: Ring Piston
• country of origin: Taiwan
• upc: 703624241278

general perwatercraft:

• Parts Accessories > Personal Watercraft Parts > Other Parts
• condition: New

payments perwatercraft:

• wallet: Google-pay
• other
• credit card: Diners-club

returns perwatercraft:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

offer perwatercraft:

• options: Ship-to-home
• availability: In Stock
• quantity: 2
• sold: 0
• started: May 18, 2026

shipping perwatercraft:

• class: Standard
• type: Fixed
• transit: 3-8 Days
• cost: $0.00
• service: Standard

seller perwatercraft:

• rating: 99.9%
• # reviews: 417618
• city: Suamico, Wisconsin

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