SPI SM-109221 Standard Hyperdryve Piston Cat 85MM

( Brand: Spi ), ( Manufacturer Part Number: SM-109221 ), ( Part Type: Piston ), ( Country Of Origin: Taiwan )

Review SPI Standard Bore Hyperdryve Piston Kits Arctic Cat 85mm fits 800 2007–2009

Introducing the SPI SM-109221 Standard HyperDrive Piston, specifically designed for Arctic Cat 800 snowmobiles manufactured between 2007 and 2009. This high-performance piston is engineered to deliver exceptional power and durability, ensuring an unparalleled riding experience.

The SPI SM-109221 piston is engineered with precision in mind. Its 85mm bore size is meticulously crafted to optimize engine performance, providing ample combustion space for a more potent powerstroke. The piston's crown is designed with a high compression finish, allowing for increased compression ratio and enhanced combustion efficiency.

This piston's top ring groove is engineered to accommodate a 0.020-inch ring gap, ensuring a proper fit and secure seal. The skirt of the piston is machined to a precise tolerance, minimizing friction and reducing engine wear. The piston's lightweight yet robust design contributes to improved engine response, making it an ideal upgrade for riders seeking enhanced power and performance.

Additionally, the SPI SM-109221 piston is manufactured using a state-of-the-art forging process, ensuring exceptional strength and durability. Its superior material properties enable the piston to withstand the rigors of snowmobiling, even in the harshest conditions.

In summary, the SPI SM-109221 Standard HyperDrive Piston is an excellent upgrade for Arctic Cat 800 snowmobiles from 2007 to 2009. Its precise engineering, high-performance design, and robust construction make it an ideal choice for riders seeking to unlock the full potential of their snowmobile engine.

Buying the Arctic Cat SPI SM-109221 Standard HyperDrive piston for Arctic Cat 800 models from 2007 to 2009 with an 85mm bore can be a wise investment for several reasons. Here are the pros:

1. Enhanced Performance: This piston is designed to deliver improved performance by increasing the compression ratio and reducing friction. This results in better throttle response, increased power output, and smoother operation.

2. Durability: The HyperDrive piston is made from high-quality materials, including forged aluminum and steel. This makes it more durable than OEM pistons and reduces the likelihood of failure due to wear and tear.

3. Increased Longevity: The HyperDrive piston is designed to last longer than OEM pistons, reducing the need for frequent replacements. This not only saves money but also reduces downtime and inconvenience.

4. Engine Protection: The piston includes a ring pack that helps protect the engine from scuffing and scoring. This is especially important in high-performance applications where the engine is subjected to more stress and wear.

1. Cost: The HyperDrive piston is more expensive than OEM pistons. This may be a deterrent for some riders, especially those on a tight budget.

2. Installation: Installing the HyperDrive piston can be a more complex process than installing an OEM piston. It may require specialized tools and expertise, which could add to the cost and time involved.

3. Compatibility: The HyperDrive piston is only compatible with the Arctic Cat 800 models from 2007 to 2009 with an 85mm bore. Riders with other models or bore sizes may need to look for alternative options.

In conclusion, the Arctic Cat SPI SM-109221 Standard HyperDrive piston is a high-performance upgrade for Arctic Cat 800 models from 2007 to 2009 with an 85mm bore. It offers improved performance, durability, increased longevity, and engine protection. However, it comes with a higher cost, more complex installation process, and limited compatibility.

If you are looking for a high-performance upgrade for your Arctic Cat 800 and have the budget for it, the HyperDrive piston is a worthwhile investment. However, if you are on a tight budget or have a different model or bore size, you may want to consider other options. Ultimately, the decision depends on your individual needs, preferences, and budget.

Details:

Made in Taiwan. Compatible with Arctic Cat model's below: 2007 Crossfire 800 EFI. HyperDryve pistons use an aluminum alloy which maintains its high tensile strength up to 700 degrees F, is 50% higher than a conventional cast piston. Includes 2 pistons, ring sets, wrist pins cir clips.

HyperDryve series pistons. All SPI pistons, rings, pins cir clips are manufactured to OEM specifications. Piston weight is compatible with original piston. This high temperature resistance significantly improves fatigue strength and impact toughness, which means it will keep you riding longer harder than the competition.

Pistons are for standard bore size 85.00mm. Manufactured by SPI.

part #: sm109221 prices

• $112.75-$130.95

specifications enginesnowmobile:

• for models: 800
• for makes: Arctic, Arctic-cat
• for years: 2007-2009
• brand: Spi
• mpn: Sm-109221
• part type: Piston
• country of origin: Taiwan

seller enginesnowmobile:

• # reviews: 412368
• city: Suamico, Wisconsin
• rating: 99.8%

payments enginesnowmobile:

• credit card: Discover
• other
• wallet: Paypal

offer enginesnowmobile:

• started: March 30, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 3

shipping enginesnowmobile:

• transit: 3-7 Days
• cost: $0.00
• service: Standard
• class: Standard
• type: Fixed

general enginesnowmobile:

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

returns enginesnowmobile:

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

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