SPI SM-109246 Standard Hyperdryve Piston Snow 85MM

( Brand: Spi ), ( Manufacturer Part Number: SM-109246 ), ( Part Type: Piston ), ( Country Of Origin: Taiwan )

Review SPI Standard Bore Hyperdryve Piston Kits Polaris Snow 85mm fits 800 2008–2009

The SPI SM-109246 Standard HyperDrive piston is an essential component for the maintenance and optimal performance of a Polaris 800 snowmobile model from the years 2008 and 2009 with an 85mm throttle bores. Designed to replace worn-out or damaged pistons, this upgraded part ensures a smoother, more efficient engine operation.

This piston features a standard compression ratio, making it suitable for most riding conditions. Its high-quality construction includes a forged aluminum alloy piston body that delivers increased durability and reliability. The piston crown is engineered with a precision-machined combustion chamber surface to ensure optimal fuel-air mixture for efficient combustion.

Additionally, the piston ring set is designed to minimize blow-by and oil consumption, contributing to improved engine efficiency and longevity. The rings are made from a high-temperature, low-friction material that ensures proper sealing and reduced engine wear.

The piston pin is made from heat-treated, chrome-molybdenum steel for strength and durability, ensuring reliable engine operation even under extreme conditions. The piston pin is held in place by a hydrodynamic piston pin boss, which reduces friction and wear for improved engine performance.

In summary, the SPI SM-109246 Standard HyperDrive piston is a high-quality, durable replacement part designed to enhance the performance and longevity of a Polaris 800 snowmobile with an 85mm throttle bore from the 2008 and 2009 model years. Its precise engineering and superior materials ensure efficient combustion, reduced engine wear, and improved overall performance.

Buying the SPI (Ski-Doo Performance Industries) SM-109246 Standard HyperDrive piston for a Polaris 800 snow vehicle model year 2008-2009 with an 85mm bore can be a consideration for those seeking improved engine performance. Below are some potential advantages and disadvantages.

1. Enhanced power: The HyperDrive piston is designed to provide more power and better engine response compared to the OEM (original equipment manufacturer) piston.

2. High-quality materials: The piston is made from forged aluminum, ensuring durability and strength.

3. Increased compression ratio: The piston offers a higher compression ratio, which can lead to better fuel efficiency and increased engine output.

4. Suitability for cold climates: The piston is specifically designed for use in cold weather conditions, making it a suitable choice for those living in areas with harsh winters.

1. Cost: The HyperDrive piston is more expensive than the OEM piston.

2. Installation complexity: Installing the aftermarket piston may require more time and expertise compared to the OEM piston, potentially leading to additional labor costs.

3. Warranty coverage: Using an aftermarket piston may impact the vehicle's factory warranty, as some manufacturers do not cover damages caused by aftermarket parts.

The decision to purchase the SPI SM-109246 Standard HyperDrive piston for a Polaris 800 snow vehicle model year 2008-2009 with an 85mm bore depends on individual priorities. If you are seeking increased power, durability, and improved performance in cold weather conditions, this aftermarket piston may be worth the investment, despite the higher cost and potential installation complexity. However, if you prioritize maintaining the factory warranty and keeping costs low, it might be best to stick with the OEM piston.

If you are confident in your mechanical abilities and are willing to invest in improved performance, the SPI SM-109246 Standard HyperDrive piston could be a worthwhile upgrade for your Polaris 800 snow vehicle. Ensure that you have the necessary tools and expertise to install the piston properly and consider the potential impact on your vehicle's warranty. If you are unsure or have concerns, consult a professional mechanic for advice.

Details:

The high temperature resistance of these pistons significantly improves fatigue strength and impact toughness. T-Molly series with Teflon-Molybdenum coating. T-Molly series pistons reduce friction, resist seizure improve durability.

Includes 2 pistons, ring sets, wrist pins cir clips as pictured. Made from space age aluminum alloy which maintains its high tensile strength up to 700 F, 50% higher than a cast piston. Includes: 1 piston, ring set, wrist pin and cir clip set. Made in Taiwan.

All SPI pistons, rings, pins cir clips are manufactured to OEM specifications. Manufactured by SPI. Piston weight is compatible with original piston.

part #: sm109246 prices

• $109.95-$131.76

specifications enginesnowmobile:

• for models: 800
• for makes: Polaris
• for years: 2008-2009
• brand: Spi
• mpn: Sm-109246
• part type: Piston
• country of origin: Taiwan

seller enginesnowmobile:

• # reviews: 414239
• rating: 99.9%
• city: Suamico, Wisconsin

returns enginesnowmobile:

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

general enginesnowmobile:

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

shipping enginesnowmobile:

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

payments enginesnowmobile:

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

offer enginesnowmobile:

• sold: 0
• started: April 15, 2026
• quantity: 1
• availability: In Stock
• options: Ship-to-home

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