ARCTIC CAT 8639-391 Running Board Grip Kit FT21

( Brand: Arctic Cat ), ( Manufacturer Part Number: 8639-391 ), ( Part Type: Board Grip )

Review ARCTIC CAT Running Board Grip Kit fits 4000

The **Arctic Cat 8639-391 Running Board Grip Kit for the FT21 4000** is a meticulously engineered accessory designed to enhance both the safety and functionality of your Arctic Cat snowmobile, particularly for riders of the iconic FT21 4000 model. This premium grip kit is crafted to address the common challenges of slippery surfaces, ensuring a secure and confident stance while navigating icy trails, deep snow, or uneven terrain. The kit features high-quality, non-slip rubber pads strategically placed along the running boards, providing an aggressive tread pattern that bites into the snow and ice, preventing accidental slips or falls. Engineered with durability in mind, these pads are constructed from abrasion-resistant, weatherproof materials that withstand the harshest winter conditions without degrading or losing their grip over time. Beyond its practical benefits, the grip kit also contributes to the aesthetic appeal of your snowmobile, offering a sleek, modern finish that complements the aggressive styling of the FT21 4000. Installation is straightforward, requiring minimal tools, and the kit is designed to fit seamlessly with the existing running board structure, ensuring a clean and professional look. Whether you're a seasoned rider looking to upgrade your gear or a new owner prioritizing safety and performance, this Arctic Cat grip kit is an essential addition to your snowmobile s arsenal, transforming your ride into a more controlled, enjoyable, and secure experience on the slopes.

### **Pros and Cons of buying a Arctic Cat 8639-391 Running Board Grip Kit (FT21 4000)**

1. **Enhanced Safety and Stability** The grip kit improves traction on the running board, reducing the risk of slips and falls, especially in wet or muddy conditions. This is particularly useful for riders who frequently dismount in challenging environments.

2. **Durability and Weather Resistance** Arctic Cat products are known for their rugged construction, and this grip kit is designed to withstand harsh outdoor conditions, including rain, snow, and dirt. The materials are likely to last longer than basic rubber mats.

3. **Easy Installation** The kit appears to be a straightforward bolt-on or adhesive application, meaning it can be installed without extensive modifications or tools. This makes it a convenient upgrade for riders who want to improve their board s functionality without major effort.

4. **Compatibility with Arctic Cat Models** Since this is an official Arctic Cat part (or at least designed for their models), it should fit the **FT21 4000** running board without issues. This reduces the risk of purchasing a generic aftermarket part that may not align properly.

5. **Improved Comfort** A grippy surface can make stepping on and off the running board more comfortable, especially for riders with wet or muddy boots. It may also reduce wear on the rider s footwear over time.

6. **Maintenance-Friendly** The grip surface can likely be cleaned with mild soap and water, and any worn sections may be replaceable or repairable, extending the kit s lifespan.

7. **Cost-Effective Upgrade** Compared to other safety or comfort-focused modifications, this is a relatively inexpensive improvement that provides noticeable benefits without requiring a full board replacement.

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1. **Limited Customization** The grip kit is a standardized solution, meaning you can t adjust the texture or material to your exact preferences. If you prefer a different level of grip or a specific material (e.g., softer for comfort or harder for durability), this may not be the best choice.

2. **Potential for Slippage Over Time** While the initial grip is likely strong, the material may degrade faster in extreme conditions (e.g., constant exposure to gasoline, salt, or abrasive dirt). This could require replacement sooner than expected.

3. **Adhesive or Bolt Requirements** If the kit requires adhesive or additional hardware, there s a small risk of improper installation leading to peeling or misalignment. However, Arctic Cat parts are generally well-engineered to minimize this issue.

4. **Not a Permanent Solution for All Terrain** While it improves grip, the running board itself may still be slippery in extreme conditions (e.g., deep mud or ice). For off-road enthusiasts, additional modifications (like a textured board or non-slip coating) might be necessary.

5. **Weight Addition** The grip kit adds slight extra weight to the running board, which may have a negligible impact on performance but could be a consideration for riders who prioritize minimal weight.

6. **Availability and Lead Times** As an Arctic Cat-specific part, it may not be as widely stocked as generic aftermarket options. You might need to order from an authorized dealer or wait for restocking, depending on availability.

7. **Potential for Overkill** If you rarely ride in wet or muddy conditions, the benefits of this kit may not justify the cost. For casual riders, a simpler solution (like a basic rubber mat) might suffice.

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The **Arctic Cat 8639-391 Running Board Grip Kit** is a practical and well-designed upgrade for riders who prioritize safety, stability, and comfort particularly in variable weather or off-road conditions. Its durability, ease of installation, and compatibility with Arctic Cat models make it a strong choice for those who want a reliable, no-fuss solution. However, it may not be necessary for riders who mostly operate in dry, controlled environments or those who prefer more customizable grip options.

- You frequently ride in wet, muddy, or slippery conditions.

- You want a durable, long-lasting solution without major installation hassles.

- You prefer official Arctic Cat parts for reliability and fit.

- You value improved safety and comfort for stepping on/off the running board.

- You rarely encounter slippery conditions and don t see a need for the upgrade.

- You want more customization (e.g., different grip textures or materials).

- You re on a tight budget and can find a simpler, cheaper grip solution elsewhere.

- You plan to modify the running board further (e.g., replacing it entirely with a textured or rubberized board).

For most **FT21 4000** owners who prioritize safety and practicality, this kit is a worthwhile investment. However, weigh its benefits against your riding habits and budget to ensure it meets your needs.

Details:

Attic Cat Supplies and Equipment.

part #: 8639391 prices

• $22.71-$62.99

specifications azsnowmobiling:

• for models: 4000
• for makes: Arctic-cat, Arctic
• brand: Arctic Cat
• mpn: 8639-391
• part type: Board Grip

general azsnowmobiling:

• Parts Accessories > Snowmobile Parts > Accessories
• condition: New

offer azsnowmobiling:

• started: February 26, 2026
• sold: 0
• availability: In Stock
• quantity: 2
• options: Ship-to-home
• best offers: True

seller azsnowmobiling:

• city: Plattsburgh, New York
• rating: 100.0%
• # reviews: 2

payments azsnowmobiling:

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

returns azsnowmobiling:

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

shipping azsnowmobiling:

• transit: 5-11 Days
• class: Standard
• carrier: USPS
• type: Calculated
• cost: $0.00
• service: USPS Ground Advantage

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