SPORTS PARTS INC 6162-S304165-42 Arm Spi Ball Joint 155

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 6162-S304165-42 ), ( Part Type: Arm Joint )

Review SPORTS PARTS INC Spi A arm Ball Joint Polaris Snowmobile fits ASSAULT RMK 800 2011–2015

The **Sports 6162-S304165-42 SPI A-Arm Ball Joint** is a high-performance, precision-engineered suspension component designed specifically for the **2011 2015 Polaris 800 RMK Assault 155**, ensuring optimal handling, durability, and off-road capability. Crafted from **heat-treated steel**, this ball joint features a **spray-in (SPI) design**, which eliminates the need for traditional grease fittings while maintaining superior lubrication and corrosion resistance. The **A-arm ball joint** integrates seamlessly with the front suspension system, providing a robust connection between the steering knuckle and the frame, allowing for smooth articulation and reduced wear under heavy loads or aggressive riding conditions. Its **ball-and-socket construction** ensures precise movement, minimizing play and enhancing stability during high-speed maneuvers, sharp turns, and rough terrain. The **OEM-fitment** guarantees an exact match with the original equipment, preventing clearance issues or compatibility problems, while the **reinforced housing** and **durable bearing** are engineered to withstand the demands of extreme off-roading, including deep mud, rocky trails, and repeated impacts. Whether tackling desert dunes, rocky trails, or competitive racing, this ball joint delivers **long-lasting performance**, reducing the risk of premature failure and maintaining consistent suspension geometry. Ideal for riders who demand reliability and precision, this component is a must-have upgrade for those seeking to extend the lifespan of their Polaris 800 RMK s suspension while improving overall ride quality and handling.

### **Pros and Cons of buying a Sports 6162-S304165-42 SPI A-Arm Ball Joint for a 2011-2015 Polaris 800 RMK Assault 155**

1. **OEM Replacement Quality** This part is designed as an original equipment replacement, meaning it should fit and function similarly to the factory component. This reduces the risk of compatibility issues that can arise with aftermarket parts that are not specifically engineered for your model.

2. **Durability and Performance** SPI (Sports Performance Industries) is a reputable manufacturer known for producing high-quality suspension and steering components. Their ball joints are typically built to withstand the stresses of off-road use, including rough terrain and heavy loads, which is critical for an assault-style ATV like the Polaris 800 RMK.

3. **Compatibility** The part number (6162-S304165-42) is explicitly listed for the 2011-2015 Polaris 800 RMK Assault 155, ensuring a precise fit without the need for modifications. This minimizes the risk of misalignment or premature wear caused by an improperly sized part.

4. **Warranty and Support** SPI parts often come with warranties, and the manufacturer typically provides customer support for installation questions or issues. This can be reassuring if you are not experienced with suspension work or if the part fails prematurely.

5. **Improved Handling** A high-quality ball joint can enhance steering responsiveness and reduce play in the steering system, which is beneficial for both on-trail and aggressive riding. This can lead to better control, especially when navigating rough or technical terrain.

6. **Long-Term Cost Savings** While the upfront cost may be higher than some generic aftermarket alternatives, a durable OEM-quality part can save money in the long run by avoiding frequent replacements or damage to other components caused by a failing ball joint.

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1. **Higher Cost** Compared to generic or non-branded aftermarket ball joints, SPI parts are typically more expensive. This may be a significant investment if you are on a tight budget or if the part is not absolutely necessary for your riding style.

2. **Limited Availability** While SPI is a well-known brand, their parts may not be as widely stocked as more mainstream brands or OEM parts. You may need to order online or from a specialty dealer, which could involve shipping delays or higher shipping costs.

3. **Installation Complexity** Replacing a ball joint on an ATV like the Polaris 800 RMK Assault requires disassembling parts of the suspension and steering system. If you are not experienced with mechanical work, the installation could be challenging, time-consuming, or even risky if done incorrectly. Professional installation may be necessary, adding to the total cost.

4. **Potential Overkill for Mild Use** If you primarily ride on smooth trails or light terrain and do not subject your ATV to extreme stress, a slightly less expensive aftermarket ball joint might suffice. In such cases, the higher cost of the SPI part may not be justified.

5. **Mixed Reviews on Longevity** While SPI parts are generally reliable, individual experiences can vary. Some riders report that ball joints, even from reputable brands, wear out faster than expected if subjected to extreme conditions (e.g., constant high-speed off-roading, heavy loads, or neglect). Always check reviews or ask in forums for specific feedback on this part for your model.

6. **No Significant Performance Upgrade** Unlike suspension upgrades or lift kits, a ball joint replacement is primarily a maintenance or safety-focused upgrade. It does not drastically improve performance but rather ensures that the steering and suspension operate correctly. If you are looking for noticeable performance gains, you may need to invest in other components.

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### **Conclusion**

The **Sports 6162-S304165-42 SPI A-Arm Ball Joint** is a strong choice for owners of the 2011-2015 Polaris 800 RMK Assault 155 who prioritize quality, durability, and compatibility. It offers the reliability of an OEM replacement with the added assurance of a reputable manufacturer. However, the higher cost and potential complexity of installation may deter some buyers, especially if the part is not strictly necessary for their riding conditions.

For riders who frequently push their ATV to its limits whether on rough terrain, at high speeds, or with heavy loads the investment in this part is likely justified. Conversely, those who ride lightly or are on a budget might consider a more affordable alternative, provided they can verify its compatibility and quality through research or recommendations.

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### **Recommendation**

- You ride aggressively or on rough terrain and want a part that can handle the stress.

- You value OEM-quality components and are willing to pay for durability and reliability.

- You are comfortable with or can afford professional installation to ensure proper fitment.

- You want to avoid potential issues with cheaper, lower-quality alternatives that may fail prematurely.

- You ride primarily on smooth trails and do not subject your ATV to extreme conditions.

- You are working with a limited budget and can find a highly rated aftermarket ball joint (e.g., from brands like **King, ARP, or TeraSwivel**) that is specifically listed for your model.

- You are unsure about installation and do not want to risk damaging other components due to improper fitment.

- You prefer to test a less expensive part first and replace it later if needed.

**Final Note:** Always inspect the ball joint for wear (e.g., play, corrosion, or damage) before purchasing a replacement. If the existing joint is still in good condition, there may be no urgent need to upgrade. Additionally, pair this replacement with a full suspension check to ensure no other components are failing.

Details:

This is helpful if you are buying multiple items. Compatibility: Years: Make: model: Application: Notes: 2011 - 2015 Polaris800 RMK Assault 155, 2016 Polaris800 Switchback 144 Series LE, 2011 Polaris800 Rush PRO-R, 2011 Polaris600 Rush, 144, 2016 Polaris600 IQ Sidetrack, 2016 Polaris550 Sidetrack LX. Parts without fitment are to be assumed universal and may require vehicle modification. SPI A-Arm Ball Joint for 2011 - 2015 Polaris 800 RMK Assault 155 Snowmobile: Lower A-Arms.

Brand: Sports Parts Inc, model Number: 6162-S304165-42. I need to exchange an item.

part #: 6162s30416542 price

• $29.24

specifications snowmobileshocksoi:

• for models: Rmk, 800, Assault
• for makes: Polaris
• for years: 2011-2015
• brand: Sports Parts Inc
• mpn: 6162-s304165-42
• part type: Arm Joint

shipping snowmobileshocksoi:

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

general snowmobileshocksoi:

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

returns snowmobileshocksoi:

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

seller snowmobileshocksoi:

• # reviews: 84579
• rating: 99.9%
• city: San Marcos, CA

payments snowmobileshocksoi:

• wallet: Paypal
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offer snowmobileshocksoi:

• sold: 0
• availability: In Stock
• quantity: 9
• options: Ship-to-home
• started: May 5, 2026

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