SP1 6613-S395067-43 Arm Brace Kit Ski Doo

( Brand: Sp1 ), ( Manufacturer Part Number: 6613-S395067-43 ), ( Part Type: Arm )

Review SP1 A arm Brace Kit Ski doo E tec Snowmobile fits MX 850 2017–2018

The **SP1 6613-S395067-43 A-Arm Brace Kit** is a meticulously engineered aftermarket upgrade designed exclusively for the **2017 and 2018 Ski-Doo MX E-TEC 850**, offering a blend of performance enhancement and durability for off-road enthusiasts. This high-quality brace kit is crafted to reinforce the A-arm (control arm) assembly, a critical component that supports the suspension and steering systems, ensuring optimal handling, stability, and longevity under demanding conditions. Engineered from premium materials, including reinforced steel and precision-machined components, the brace kit is built to withstand the rigors of aggressive riding, rough terrain, and high-speed maneuvers, reducing flex and improving overall rigidity. The kit features a **bolt-on installation**, allowing for a straightforward and time-efficient upgrade without the need for extensive modifications or welding, making it an ideal choice for riders who seek enhanced performance without compromising their vehicle s original integrity. Whether tackling steep climbs, navigating tight trails, or pushing the limits on the open trail, this brace kit delivers a noticeable improvement in steering response, suspension compliance, and structural support, ultimately elevating the MX E-TEC 850 s off-road capabilities. Perfect for serious riders who demand precision and reliability, this kit is a testament to SP1 s commitment to performance-driven aftermarket solutions tailored for Ski-Doo s most powerful and capable models.

### **Pros and Cons of buying a SP1 6613-S395067-43 A-Arm Brace Kit for 2017-2018 Ski-Doo MX E-Tec 850**

1. **Improved Stability and Handling** The A-arm brace kit is designed to reinforce the suspension linkage, reducing flex and improving ride quality, especially on rough terrain. This can lead to better control and a more predictable response during aggressive riding.

2. **Enhanced Durability** The stock A-arms on the MX E-Tec 850 are prone to wear and fatigue, particularly under heavy use or off-road conditions. The brace kit helps distribute stress more evenly, extending the lifespan of the suspension components and reducing the risk of sudden failure.

3. **Better Shock Absorption** By minimizing lateral movement, the brace kit can help the suspension work more efficiently, reducing bottoming out and improving comfort on bumpy trails or in rough conditions.

4. **Compatibility with Aftermarket Upgrades** If you plan to modify your suspension (e.g., with stiffer shocks or different spring rates), a reinforced A-arm brace can better support those changes without compromising structural integrity.

5. **Cost-Effective Prevention** Replacing a broken A-arm or suspension linkage can be expensive, often requiring labor-intensive repairs. The brace kit acts as a preventive measure, potentially saving you money in the long run.

6. **Easy Installation** Many brace kits, including this one, are designed for straightforward bolt-on installation, requiring minimal tools and expertise. Most riders can complete the job in under an hour with basic mechanical skills.

7. **OEM or High-Quality Aftermarket Support** Depending on the brand, this kit may be backed by a warranty or strong customer support, ensuring reliability if issues arise.

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1. **Limited Performance Gains** While the brace kit improves stability, it does not significantly alter the bike s handling characteristics. If you re looking for major performance upgrades (e.g., quicker steering response or reduced weight), this kit alone won t deliver those benefits.

2. **Potential Over-Rigidness** In some cases, excessive stiffness can make the bike feel less forgiving on rough terrain, transferring more vibration to the rider. This might reduce comfort, especially on long rides or in very uneven conditions.

3. **Compatibility Concerns** Ensure the kit is specifically designed for your model year (2017-2018 MX E-Tec 850). Mismatched parts could lead to improper fitment, reducing effectiveness or even causing damage.

4. **No Guarantee Against All Failures** While the brace kit reduces flex, it does not eliminate the risk of suspension failure entirely. Extreme impacts or prolonged stress may still lead to component wear or breakage.

5. **Aesthetic Impact** The brace kit adds visible reinforcement to the A-arms, which some riders may find less appealing from an aesthetic standpoint, though functionality is the primary concern for most off-road enthusiasts.

6. **Cost Relative to Other Upgrades** At around **$100 $200** (depending on brand and retailer), the brace kit is a modest investment. However, if you re planning a full suspension overhaul or other major mods, the return on investment may feel less impactful compared to more high-performance upgrades.

7. **DIY Risk for Inexperienced Riders** While installation is generally simple, improper alignment or overtightening could stress other suspension components. Riders unfamiliar with suspension work may need to consult a mechanic to ensure proper setup.

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### **Conclusion**

The **SP1 6613-S395067-43 A-Arm Brace Kit** is a **practical and cost-effective upgrade** for the 2017-2018 Ski-Doo MX E-Tec 850, particularly for riders who prioritize **durability, stability, and long-term suspension reliability**. It s an ideal choice if you:

- Frequently ride on rough or technical terrain.

- Want to prevent premature suspension failure.

- Are looking for a simple, bolt-on solution to reinforce stock components.

However, if you re seeking **major handling improvements, reduced weight, or aggressive performance tuning**, this kit alone may not be sufficient. In those cases, pairing it with other upgrades (e.g., stiffer shocks, custom suspension tuning) could yield better results.

For most riders who want **peace of mind and improved ride quality without complex modifications**, the brace kit is a **solid recommendation**. It strikes a balance between cost, ease of installation, and tangible benefits.

- You notice flex or instability in your suspension.

- You want to extend the life of your A-arms and suspension.

- You re comfortable with a straightforward DIY installation.

- You re looking for dramatic handling changes.

- You prefer minimal modifications and don t prioritize suspension reinforcement.

- You re unsure about working on suspension components and lack access to a mechanic.

For the average MX E-Tec 850 rider, the brace kit is a **worthwhile investment** that enhances reliability without overcomplicating the build.

Details:

I need to exchange an item. 2018 - Ski-Doo MX Z Blizzard E-TEC 850. Parts without fitment are to be assumed universal and may require vehicle modification.: Brand: SP1, model Number: 6613-S395067-43.

2017 - 2018 Ski-Doo MX Z TNT E-TEC 850. This is helpful if you are buying multiple items. 2017 - 2018 Ski-Doo MX Z X E-TEC 850.

part #: 6613s39506743 price

• $77.02

specifications snowmobileshocksoi:

• for models: Mx, 850
• for makes: Ski-doo
• for years: 2017-2018
• brand: Sp1
• mpn: 6613-s395067-43
• part type: Arm

shipping snowmobileshocksoi:

• transit: 4-7 Days
• cost: $0.00
• type: Fixed
• service: Standard
• class: Standard

seller snowmobileshocksoi:

• # reviews: 84455
• city: San Marcos, CA
• rating: 99.9%

general snowmobileshocksoi:

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

payments snowmobileshocksoi:

• other
• credit card: Visa
• wallet: Paypal

returns snowmobileshocksoi:

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

offer snowmobileshocksoi:

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

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