SPORTS PARTS INC 3918-S551677-48 Arm Spi Upper Ball Joint Ski Doo 800R

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 3918-S551677-48 ), ( Part Type: Arm Joint )

Review SPORTS PARTS INC Spi A arm Upper Ball Joint Ski doo E tec Snowmobile fits MX TNT 2013–2014

The **3918-S551677-48 SPI A-Arm Upper Ball Joint** is a precision-engineered, high-performance suspension component designed exclusively for the **2013-2014 Ski-Doo MX TNT E-TEC 800R**, ensuring optimal handling, stability, and durability under the demanding conditions of off-road and trail riding. Crafted from **heat-treated, forged steel**, this ball joint is built to withstand extreme forces, vibrations, and repeated stress cycles, making it a critical upgrade for riders seeking enhanced suspension articulation and longevity. The **A-arm upper ball joint** integrates seamlessly with the MX TNT s advanced **SPI (Suspension Performance Interface)** system, allowing for smoother wheel travel, reduced binding, and improved cornering response key factors in maintaining control during aggressive maneuvers, jumps, and rough terrain. Its **spherical design** ensures consistent alignment and minimal play, preventing premature wear on bushings, tie rods, and steering components while reducing the risk of alignment-related issues that can compromise ride quality. Whether tackling steep descents, tight switchbacks, or technical obstacles, this ball joint delivers **superior durability and reliability**, reinforcing the MX TNT s reputation for high-performance off-road capability. Built to **OEM specifications**, it guarantees a perfect fit with the stock suspension geometry, ensuring no modifications are required for installation. For riders who demand the best in suspension performance and off-road resilience, this ball joint is an essential component for maintaining the MX TNT s legendary agility and responsiveness.

### **Pros and Cons of buying a Sports 3918-S551677-48 SPI A-Arm Upper Ball Joint for 2013-2014 Ski-Doo MX TNT E-TEC 800R**

1. **OEM or High-Quality Replacement** The Sports brand is known for producing genuine or high-quality aftermarket parts that meet or exceed factory specifications. This ensures compatibility with your Ski-Doo s suspension system, reducing the risk of premature wear or failure.

2. **Durability and Performance** A properly functioning upper ball joint is critical for smooth steering, stability, and suspension articulation. A new or upgraded ball joint can improve handling, reduce play in the steering, and enhance overall ride quality, especially on rough terrain.

3. **Prevents Further Damage** Worn or failing ball joints can damage other suspension components, such as the A-arm, tie rods, or steering rack. Replacing it proactively can save money in the long run by avoiding secondary issues.

4. **Ease of Installation** This part is designed for straightforward replacement, often requiring only basic tools. Many users report that it can be swapped out in under an hour with minimal effort, making it a DIY-friendly upgrade.

5. **Compatibility with Modifications** If you ve made suspension or steering adjustments (e.g., stiffer bushings, different shocks), a fresh ball joint ensures that those modifications perform as intended without binding or excessive wear.

6. **Warranty Coverage** Sports parts typically come with warranties, providing peace of mind in case of defects. This can be particularly valuable if you re unsure about the quality of the part or its long-term performance.

7. **Cost-Effective Alternative to Full Suspension Rebuild** Replacing just the ball joint is far cheaper than overhauling the entire A-arm or suspension system. It s a targeted fix for a common wear point without unnecessary expense.

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1. **Potential Counterfeit or Low-Quality Duplicates** While Sports is a reputable brand, there is a risk of purchasing a counterfeit or inferior knockoff, especially if buying from untrusted sellers (e.g., third-party marketplaces without authentication). Always verify the seller s reputation and product authenticity.

2. **Skill Dependency** While the installation is relatively simple, improper handling (e.g., overtightening, misalignment, or using incorrect tools) can lead to premature failure or damage to adjacent components. Those without mechanical experience may need to consult a professional.

3. **Limited Longevity Compared to OEM** Some aftermarket parts, even from reputable brands, may not last as long as genuine OEM components. However, this is less likely with Sports, which prioritizes quality control.

4. **Compatibility Concerns** Ensure the part number (3918-S551677-48) is correct for your exact model year and variant (E-TEC 800R). Mixing up parts with other Ski-Doo models (e.g., MXZ, SRT) could lead to fitment issues or poor performance.

5. **Cost Relative to OEM** While aftermarket parts are often cheaper than OEM replacements, the price gap may not be significant for this specific part. If you re already buying from a dealer, the OEM version might not be much more expensive.

6. **Environmental Factors** Off-road use subjects ball joints to extreme stress, dirt, and moisture. Even a high-quality part may wear faster if not properly maintained (e.g., regular cleaning, lubrication, and inspection).

7. **Installation Tools May Be Required** Some ball joints require specialized tools (e.g., ball joint press, torque wrench) for proper installation. Rushing or using incorrect tools can compromise the part s performance.

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### **Conclusion**

The **Sports 3918-S551677-48 SPI A-Arm Upper Ball Joint** is a solid choice for replacing a worn or failing ball joint on your 2013 2014 Ski-Doo MX TNT E-TEC 800R. It offers a balance of quality, durability, and ease of installation, making it a practical upgrade for improving handling and preventing suspension issues. However, the decision hinges on ensuring you purchase an **authentic part** from a trusted source and have the **basic mechanical skills** to install it correctly.

If you re comfortable with DIY maintenance and prioritize performance over cost, this part is highly recommended. For those unsure about installation or facing persistent steering/suspension problems, consulting a Ski-Doo specialist may be wise to diagnose underlying issues (e.g., worn bushings, misaligned components).

- **Buy from an authorized dealer or reputable online retailer** (e.g., Ski-Doo s official parts store, trusted aftermarket suppliers like **Sports, Motocross Direct, or ATV Parts Pro**) to avoid counterfeits.

- **Inspect the ball joint for wear** before purchasing (e.g., play in the joint, rust, or deformation). If it s already damaged, replace it immediately.

- **Follow the manufacturer s torque specifications** and use the correct tools during installation.

- **Consider a full suspension inspection** if you notice other symptoms (e.g., clunking noises, uneven tire wear, or excessive steering play), as the ball joint may not be the only issue.

- **Lubricate and inspect the ball joint periodically** to extend its lifespan, especially if you ride frequently in harsh conditions.

**Final Verdict:** **Purchase the Sports ball joint** if you re confident in its quality and your ability to install it properly. It s a cost-effective, high-performance solution for maintaining your Ski-Doo s suspension integrity.

Details:

I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification. 2014 - 2015 Ski-Doo GSX SE E-TEC 800R. 2012 - 2013 Ski-Doo Free ride E-TEC 800R 154.

2012 - 2013 Ski-Doo Free ride E-TEC 800R 137. This is helpful if you are buying multiple items.: Brand: Sports Parts Inc, model Number: 3918-S551677-48.

part #: 3918s55167748 price

• $26.19

specifications snowmobileshocksoi:

• for models: Mx, Tnt
• for makes: Ski-doo
• for years: 2013-2014
• brand: Sports Parts Inc
• mpn: 3918-s551677-48
• part type: Arm Joint

seller snowmobileshocksoi:

• city: Boise, ID
• rating: 99.9%
• # reviews: 80310

shipping snowmobileshocksoi:

• type: Fixed
• class: Standard
• transit: 3-6 Days
• cost: $0.00
• service: Standard

offer snowmobileshocksoi:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• started: March 17, 2026
• quantity: 9

general snowmobileshocksoi:

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

returns snowmobileshocksoi:

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

payments snowmobileshocksoi:

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

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