SPI 09-817N Standard Piston Exciter 73MM

( Brand: Spi ), ( Manufacturer Part Number: 09-817N ), ( Part Type: Piston )

Review SPI Standard Bore Piston Kits Yamaha Exciter 73mm fits EX570 570 1987–1993

Introducing the SPI 09-817N Standard Piston, specifically designed for Yamaha Exciter 570 models from the years 1987 to 1993. This piston caters to engines with a 73mm bore size. The SPI 09-817N is a high-quality replacement part for those seeking to restore the performance of their Yamaha Exciter 570.

The piston is constructed from forged aluminum alloy, ensuring durability and strength. The forging process results in a piston with superior strength and dimensional stability compared to cast pistons. The piston's crown is designed to provide optimal combustion efficiency, ensuring optimal power output from your engine.

The piston's skirt is designed to minimize friction with the engine's cylinder wall. This is achieved through the use of a thin, hard-anodized coating on the piston's skirt. This coating also provides an additional layer of protection against scuffing and wear, extending the life of the piston.

The piston's ring grooves are precision machined to ensure proper ring seating and compression. This results in improved ring performance and reduced blow-by, which translates to improved engine efficiency and power output.

The SPI 09-817N piston is also designed to work seamlessly with OEM connecting rods. This means that you can install this piston as a standalone replacement or as part of a complete engine rebuild.

In conclusion, the SPI 09-817N Standard Piston is a high-quality replacement part for Yamaha Exciter 570 engines from 1987 to 1993 with a 73mm bore size. Its forged aluminum alloy construction ensures durability and strength, while its optimized design provides improved combustion efficiency and reduced friction. With its precision machined ring grooves and compatibility with OEM connecting rods, this piston is the perfect choice for those looking to restore the performance of their Yamaha Exciter 570.

Buying a SPI 09-817N standard piston for a Yamaha Exciter 570 (models from 1987 to 1993 with a 73mm bore) can be a viable option for those seeking to improve their ATV's performance. Here are some potential pros and cons to consider before making a purchase:

1. Improved power and torque: A new piston can help increase the power output and torque of your ATV, leading to better acceleration and overall performance.

2. Enhanced durability: A high-quality aftermarket piston, such as the SPI 09-817N, can offer improved durability compared to the original equipment manufacturer (OEM) piston.

3. Customization: Upgrading to a high-performance piston can be a way to customize your ATV and differentiate it from other models.

1. Cost: Aftermarket pistons can be more expensive than OEM pistons, which may be a deterrent for some buyers.

2. Installation: Installing a new piston can be a complex process that requires specialized tools and knowledge. It may be necessary to hire a professional mechanic or use a kit designed for home installation.

3. Potential compatibility issues: While the SPI 09-817N piston is specifically designed for the Yamaha Exciter 570, there is still a possibility of compatibility issues arising due to differences in engine configurations or other factors.

The decision to buy a SPI 09-817N standard piston for a Yamaha Exciter 570 depends on several factors, including your budget, technical expertise, and desired performance improvements. If you are looking for increased power, improved durability, and the ability to customize your ATV, then a high-performance aftermarket piston may be worth the investment. However, if you are concerned about the cost and complexity of the installation process, or if you are unsure about the compatibility of the piston with your specific ATV model, then it may be best to stick with the OEM piston.

If you are confident in your mechanical abilities and have a clear understanding of the potential benefits and risks of upgrading to a high-performance aftermarket piston, then the SPI 09-817N standard piston for the Yamaha Exciter 570 could be a worthwhile investment. However, it is important to thoroughly research the product and ensure that it is compatible with your specific ATV model before making a purchase. Additionally, it may be wise to consult with a professional mechanic or use a reputable installation kit to ensure a successful and safe installation process.

Details:

Piston weight compatible with original piston. All pistons, rings, pins and cir clips are manufactured to OEM specifications. Pistons are for standard bore size 73.00mm. 1988 Exciter 570.

Made in Taiwan. Manufactured by SPI. Compatible with Yamaha model's below: 1987 Exciter 570. OEM piston kits.

Includes: 2 pistons, ring sets, wrist pins cir clips.

part #: 09817n prices

• $50.92-$79.68

specifications enginesnowmobile:

• for models: Ex570, 570
• for makes: Yamaha
• for years: 1987-1993
• brand: Spi
• mpn: 09-817n
• part type: Piston

shipping enginesnowmobile:

• transit: 2-6 Days
• cost: $0.00
• service: Standard
• type: Fixed
• class: Standard

seller enginesnowmobile:

• city: Suamico, Wisconsin
• # reviews: 388231
• rating: 99.3%

general enginesnowmobile:

• condition: New
• Snowmobile Parts > Engines Components > Snowmobile Engine Components

returns enginesnowmobile:

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

offer enginesnowmobile:

• availability: In Stock
• started: August 27, 2025
• options: Ship-to-home
• sold: 0
• quantity: 4

payments enginesnowmobile:

• credit card: Visa
• other
• wallet: Google-pay

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