SPORTS PARTS INC 8722-S381285-82 Spi Hyperdryve Piston Kit BORE-85.00MM

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 8722-S381285-82 ), ( Part Type: Piston )

Review SPORTS PARTS INC Spi Hyperdryve Piston Kit std Bore-85.00mm Polaris fits SWITCHBACK STD 800 2017–2018

Introducing the Sports 8722-S381285-82 SPI HyperDryve Piston Kit, specifically designed for the 2017-2018 Polaris 800 Switchback snowmobiles. This piston kit is an essential upgrade for those seeking improved performance and reliability from their snowmobiles.

The HyperDryve piston design delivers enhanced combustion efficiency and increased power output. The piston features a standard bore of 85.00mm, ensuring a perfect fit for your Polaris 800 Switchback. This piston kit is a direct replacement for the OEM part, making installation straightforward and hassle-free.

The piston is engineered from high-quality materials, ensuring durability and long-lasting performance. Its precise machining ensures a snug fit in the cylinder, minimizing the potential for blow-by and reducing emissions. The piston's crown is designed with a domed shape, which maximizes the contact area with the cylinder head, ensuring optimal compression and power transfer.

The piston skirt is designed with a full-skirted, floating design that minimizes friction and reduces wear on the cylinder wall. This results in reduced heat buildup and improved engine longevity. The piston pin is made from high-strength material, ensuring a secure connection between the piston and connecting rod.

The piston kit also includes high-performance rings, which provide superior sealing and reduce exhaust gas leakage. These rings are designed to withstand the rigors of snowmobiling, ensuring consistent performance in even the most demanding conditions. The piston kit also includes new wrist pins and circlips.

Installing this piston kit on your Polaris 800 Switchback will provide several benefits, including increased horsepower, improved combustion efficiency, reduced engine wear, and extended engine life. This piston kit is an excellent investment for any snowmobiler looking to get the most out of their machine.

In conclusion, the Sports 8722-S381285-82 SPI HyperDryve Piston Kit is a high-performance upgrade for your 2017-2018 Polaris 800 Switchback. Its advanced design delivers improved power output, enhanced combustion efficiency, and extended engine life. With its precise machining and high-quality materials, this piston kit is a reliable and effective solution for those seeking to maximize the performance of their snowmobile.

Pros and Cons of buying a SPIs Hyperdryve Piston Kit for 2017-2018 Polaris 800 Switchback Snowmobiles

a. Enhanced Power: This piston kit is designed to provide increased power and performance by optimizing the combustion process.

b. Improved Efficiency: The piston kit is engineered to improve fuel efficiency, reducing operating costs and environmental impact.

c. Durability: The piston kit is manufactured using high-quality materials and precision manufacturing processes, ensuring long-lasting performance.

d. Compatibility: The kit is specifically designed for 2017-2018 Polaris 800 Switchback snowmobiles, ensuring a perfect fit.

a. Cost: The SPIs Hyperdryve Piston Kit is a premium aftermarket product, and its price point may be higher than OEM (Original Equipment Manufacturer) alternatives.

b. Installation Complexity: Installing the piston kit may require specialized tools and skills, potentially adding to the overall cost and time investment.

The SPIs Hyperdryve Piston Kit offers significant power and efficiency improvements for 2017-2018 Polaris 800 Switchback snowmobiles. However, its premium price and the potential complexity of installation are factors to consider before making a purchase.

If you're an advanced rider seeking maximum power and performance from your snowmobile, the SPIs Hyperdryve Piston Kit is an excellent investment. However, if you're a casual rider or concerned about costs and installation complexity, it may be worth considering OEM alternatives or waiting for potential price drops. Always ensure that the installation is performed by a qualified professional to maintain the safety and reliability of your snowmobile.

Details:

Compatibility: Years: Make: model: Application: Notes: 2017 - 2018 Polaris800 PRO-RMK 163, SwitchBack PRO-S, 2018 174, XCR, 2017 Polaris800 155 LE, 163 3in.: Brand: Sports Parts Inc, model Number: 8722-S381285-82. 2017 - 2017 Polaris800 RMK Assault 155 3in. SPI Hyperdryve Piston Kit-Std Bore-85.00mm for 2017 - 2018 Polaris 800 SwitchBack Adventure Snowmobile: Bore: 85.00mm.

I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.

part #: 8722s38128582 price

• $130.73

specifications enginesnowmobile:

• for models: Std, 800, Switchback
• for makes: Polaris
• for years: 2017-2018
• brand: Sports Parts Inc
• mpn: 8722-s381285-82
• part type: Piston

seller enginesnowmobile:

• city: Indiana, US
• rating: 99.7%
• # reviews: 69217

returns enginesnowmobile:

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

shipping enginesnowmobile:

• type: Fixed
• transit: 2-5 Days
• service: Standard
• cost: $0.00
• class: Standard

offer enginesnowmobile:

• availability: In Stock
• sold: 0
• started: November 3, 2025
• options: Ship-to-home
• quantity: 9

general enginesnowmobile:

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

payments enginesnowmobile:

• other
• wallet: Paypal
• credit card: Visa

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