SPORTS PARTS INC 4887-S643615-27 Spi Moly Upper Arm Sno Pro Cat

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4887-S643615-27 ), ( Part Type: Arm )

Review SPORTS PARTS INC Spi Chrome Moly Upper A arm black Arctic Cat Sno Pro fits CROSSFIRE EFI 800 2009

The **SPI Moly Upper A-Arm (Part #4887-S643615-27) in Black** is a precision-engineered, high-performance suspension component designed exclusively for the **2009 Arctic Cat CrossFire 800 EFI Sno-Pro**, ensuring optimal handling, durability, and reliability in demanding off-road and snowmobile applications. Crafted from **high-grade, heat-treated steel**, this upper A-arm is built to withstand the extreme forces generated during aggressive riding, deep snow traversing, and prolonged use in harsh winter conditions. The component features a **sleek, aerodynamic black powder-coat finish**, not only enhancing its visual appeal but also providing superior corrosion resistance to prevent rust and degradation from moisture, salt, and snow critical factors in preserving performance over extended seasons. Engineered with **laser-cut precision**, the A-arm maintains perfect alignment with the suspension system, reducing unnecessary wear on bushings, ball joints, and other drivetrain components while minimizing vibration transfer to the rider for a smoother, more controlled experience.

This upper A-arm is a **direct-fit replacement**, meticulously designed to match the exact specifications of the original equipment, ensuring seamless integration with the CrossFire 800 s suspension geometry. The robust construction includes **reinforced mounting points** and **optimized pivot geometry**, which enhance stability and responsiveness, allowing the sno-mobiler to navigate tight turns, steep inclines, and uneven terrain with confidence. Whether tackling deep powder, icy trails, or technical obstacles, this component delivers **superior load-bearing capacity** and **fatigue resistance**, reducing the risk of premature failure and extending the lifespan of the entire suspension assembly. Additionally, the **black finish** is not only a stylish choice for riders who prefer a modern, aggressive aesthetic but also helps dissipate heat more efficiently, further protecting internal components from thermal stress.

For performance-oriented riders and enthusiasts who demand the best in durability and precision, the **SPI Moly Upper A-Arm** is an indispensable upgrade. Whether replacing a worn-out OEM part or enhancing the stock suspension for improved handling, this component exemplifies **engineering excellence** and **off-road readiness**. Backed by **SPI Moly s reputation for quality and reliability**, this part is a trusted choice for those who refuse to compromise on performance, ensuring that every ride on the **2009 Arctic Cat CrossFire 800 EFI Sno-Pro** is as powerful and precise as possible.

### **Pros and Cons of buying a Sports 4887-S643615-27 SPI Moly Upper A-Arm (Black) for a 2009 Arctic Cat Crossfire 800 EFI Sno-Pro**

1. **OEM Replacement Part** This is an original equipment or high-quality aftermarket part designed specifically for the Arctic Cat Crossfire 800, ensuring a proper fit and function without modifications.

2. **SPI Moly Coating** The part is coated with **SPI Moly**, a high-performance dry-film lubricant that reduces friction, wear, and noise while improving durability. This is particularly beneficial for off-road and winter use where components endure harsh conditions.

3. **Black Finish** The black color helps resist rust and corrosion, which is advantageous for snowmobiles that operate in wet, icy environments.

4. **Compatibility** The part number (4887-S643615-27) is verified for the **2009 Arctic Cat Crossfire 800 EFI Sno-Pro**, reducing the risk of purchasing an incorrect or mismatched component.

5. **Durability** The upper A-arm is a critical suspension component, and a well-built aftermarket part like this can outlast stock OEM parts, especially if the vehicle is used aggressively.

6. **Easier Maintenance** The SPI Moly coating may reduce the need for frequent greasing or lubrication, simplifying upkeep.

7. **Potential Performance Boost** A smoother-operating suspension can improve handling, especially in rough or snowy terrain, where suspension wear is common.

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1. **Cost** Aftermarket parts with premium coatings like SPI Moly are typically more expensive than basic OEM replacements. If budget is a concern, this may be a significant upfront investment.

2. **Installation Complexity** Replacing an upper A-arm requires mechanical skill, proper tools, and possibly alignment adjustments afterward. If the owner lacks experience, labor costs may apply.

3. **Availability of Stock Parts** While this part is available, stock OEM A-arms might still be found at lower prices, though they may lack the SPI Moly benefits.

4. **Potential Overkill for Light Use** If the Crossfire is used primarily for casual riding on groomed trails, the extra durability of SPI Moly may not be necessary, making the cost unjustified.

5. **Warranty Considerations** If the vehicle is still under warranty, modifying or replacing suspension components with aftermarket parts could void certain coverage, depending on the manufacturer s policies.

6. **Compatibility Risks (If Counterfeit)** While this part appears legitimate, there is always a risk of purchasing a knockoff, especially from untrusted sellers. Verifying the source is crucial.

7. **Limited Long-Term Data** While SPI Moly is well-regarded, long-term performance data on this specific part for Arctic Cat vehicles may not be as extensive as for more common brands.

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The **Sports 4887-S643615-27 SPI Moly Upper A-Arm** is a **high-quality, performance-oriented upgrade** for a 2009 Arctic Cat Crossfire 800 EFI Sno-Pro, particularly if the vehicle is used aggressively in rough or snowy conditions. The SPI Moly coating provides tangible benefits in durability, reduced friction, and potential noise reduction, making it a worthwhile investment for serious riders. However, the higher cost and installation requirements may not justify the purchase for casual or light-use owners.

- **Buy if:** You prioritize durability, reduced maintenance, and improved suspension performance in demanding conditions (e.g., deep snow, rough trails, or frequent use). The SPI Moly coating is especially valuable if you neglect regular greasing.

- **Consider alternatives if:** You are on a tight budget, the Crossfire is used lightly, or you prefer to stick with OEM parts for warranty or simplicity. In that case, a used/refurbished OEM A-arm may suffice.

- **Verify the seller** to ensure authenticity, as counterfeit parts can be a risk.

- **Budget for installation** if DIY skills are lacking, as improper alignment can affect handling.

**Final Verdict:** For riders who demand reliability and performance from their Arctic Cat, this is a **strong aftermarket choice**. For others, weighing the cost against usage frequency is essential.

Details:

Brand: Sports Parts Inc, model Number: 4887-S643615-27. 2007 - 2009 Arctic Cat Crossfire 1000 EFI Sno Pro Right. 2009 - Arctic Cat Crossfire 1000 Sno Pro LE Left. I need to exchange an item.

This is helpful if you are buying multiple items. Parts without fitment are to be assumed universal and may require vehicle modification. SPI Chrome Moly Upper A-Arm-Black for 2009 Arctic Cat Crossfire 800 EFI Sno Pro LE Snowmobile Right: Application: Right.

part #: 4887s64361527 price

• $72.44

specifications snowmobileshocksoi:

• for models: Efi, 800, Crossfire
• for makes: Arctic, Arctic-cat
• for years: 2009
• brand: Sports Parts Inc
• mpn: 4887-s643615-27
• part type: Arm

offer snowmobileshocksoi:

• started: May 3, 2026
• quantity: 9
• options: Ship-to-home
• sold: 0
• availability: In Stock

returns snowmobileshocksoi:

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

seller snowmobileshocksoi:

• rating: 99.9%
• # reviews: 84460
• city: Indiana, US

general snowmobileshocksoi:

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

payments snowmobileshocksoi:

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

shipping snowmobileshocksoi:

• type: Fixed
• transit: 3-5 Days
• class: Standard
• service: Standard
• cost: $0.00

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