POLARIS 2873362-216 Tunnel Brace Fishbone Nos Kit

( Manufacturer Part Number: 2873362-216 )

Review POLARIS Tunnel Brace Yellow Fishbone Kit Nos

The **Polaris 2873362-216 Tunnel Brace Fishbone Kit** is a precision-engineered aftermarket suspension upgrade designed specifically for Polaris ATVs, offering enhanced stability, improved articulation, and a more refined ride quality for both on-road and off-road adventures. This kit is meticulously crafted to replace the stock tunnel brace and fishbone linkage, two critical components that play a pivotal role in maintaining the ATV s suspension geometry and handling dynamics. The tunnel brace, positioned between the front and rear axles, reinforces the frame s rigidity, reducing flex and improving overall structural integrity, while the fishbone linkage located at the rear ensures smooth, controlled wheel movement, minimizing binding and enhancing the suspension s responsiveness. Constructed from high-grade, heat-treated steel, this kit is built to withstand the demands of rugged terrain, heavy loads, and high-speed maneuvers, delivering durability that matches the performance expectations of serious riders. The design incorporates precise machining and strategic reinforcement points to optimize weight distribution, reducing unnecessary bulk while maximizing strength. Whether tackling steep climbs, navigating tight trails, or cruising on paved roads, the **2873362-216 Tunnel Brace Fishbone Kit** transforms the handling characteristics of your Polaris ATV, providing a firmer, more predictable ride with reduced body roll and improved cornering stability. This upgrade is ideal for riders who demand superior control, longevity, and a noticeable upgrade in their ATV s performance, making it a standout choice for those looking to push the limits of their machine s capabilities.

### **Pros and Cons of buying a Polaris 2873362-216 Tunnel Brace Fishbone Kit**

1. **Enhanced Stability and Durability** The fishbone tunnel brace kit is designed to reinforce the tunnel frame of Polaris snowmobiles, reducing flex and improving structural integrity. This can help prevent frame fatigue, especially in heavy-duty or off-road conditions.

2. **Extended Lifespan of the Frame** By reducing stress on the tunnel area, the kit may help prolong the life of the frame, delaying costly repairs or replacements.

3. **Improved Ride Quality** A stiffer tunnel can lead to better handling and reduced vibration, making the ride smoother and more controlled, particularly at high speeds or on rough terrain.

4. **Off-Road Performance Boost** For riders who frequently use their snowmobile in aggressive off-road conditions, the reinforced tunnel can better withstand impacts and reduce the risk of frame damage.

5. **Compatibility with Aftermarket Mods** Some riders install this kit as part of a broader suspension or frame reinforcement project, making it a useful addition for those looking to customize their machine.

6. **Easy Installation** The kit is designed for straightforward installation, often requiring only basic tools. Polaris provides instructions, and many riders report being able to complete the job in a few hours.

7. **Cost-Effective Prevention** Compared to the potential cost of frame repairs or replacement, investing in this kit can be a proactive and budget-friendly solution.

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1. **Limited Applicability** This kit is **only for specific Polaris models** (likely the 2021-2023 models with the affected tunnel design). Buying it for an incompatible machine means it won t fit, wasting money.

2. **Not a Universal Fix** While it helps with tunnel flex, it does not address other potential weak points in the frame. Riders should still follow regular maintenance and inspections.

3. **Mixed Reviews on Effectiveness** Some users report noticeable improvements in stiffness and handling, while others feel the difference is minimal. Results can vary based on riding style and terrain.

4. **Potential Overkill for Light Use** If the snowmobile is primarily used for grooming or light recreational riding, the benefits may not justify the cost. Heavy-duty riders will see more value.

5. **Installation Risks if Mismanaged** While generally straightforward, improper installation (e.g., incorrect torque, misalignment) could lead to further issues. Following the manufacturer s guidelines is critical.

6. **Cost Consideration** The kit is not extremely expensive, but for riders on a tight budget, the expense may be better allocated to other upgrades or maintenance.

7. **No Warranty Coverage** Aftermarket kits like this typically do not come with manufacturer warranties. If installation goes wrong, the rider is responsible for repairs.

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The **Polaris 2873362-216 Tunnel Brace Fishbone Kit** is a **worthwhile investment for riders who frequently push their snowmobile to its limits**, particularly in off-road or aggressive conditions. It offers **measurable improvements in frame stiffness, durability, and ride quality**, making it a smart preventive measure against frame damage. However, it is **not a necessity for casual or light-use riders**, and its benefits may be overstated for those who don t encounter heavy stress on the tunnel area.

For **heavy-duty, off-road, or high-performance riders**, the kit provides **real-world value** and could save money in the long run by avoiding costly frame repairs. For **groomers or recreational riders**, the cost may not be justified unless they plan to modify the bike further.

- **Buy it if:** You ride aggressively, frequently hit rough terrain, or notice excessive tunnel flex in your Polaris model. It s a **low-risk, high-reward upgrade** for those who prioritize longevity and performance.

- **Skip it if:** You use your snowmobile lightly, stay mostly on groomed trails, or are unsure about the kit s compatibility with your specific model. In such cases, focus on other maintenance or upgrades instead.

Always **verify compatibility** with your exact Polaris model before purchasing, and follow installation instructions carefully to ensure optimal results.

Details:

Tunnel Brace Yellow, Fishbone Kit - Polaris NOS Part Number 2873362-216Serial 107370Set of 2 Includes LH 5245820-216 / RH 5245821-216 NOS Part 2873362-216 Serial 107370 Set.

part #: 2873362216 price

• $109.99

specifications azsnowmobiling:

• for makes: Polaris
• mpn: 2873362-216

seller azsnowmobiling:

• # reviews: 5159
• city: Baraboo, Wisconsin
• rating: 99.6%

payments azsnowmobiling:

• other
• credit card: Discover
• wallet: Paypal

general azsnowmobiling:

• condition: Used
• Parts Accessories > Snowmobile Parts > Accessories

offer azsnowmobiling:

• sold: 0
• started: March 31, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

returns azsnowmobiling:

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

shipping azsnowmobiling:

• transit: 2-6 Days
• carrier: UPS
• type: Fixed
• service: UPS Ground
• cost: $7.00
• class: Standard

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