fits model: 850, Sportsman. make: Polaris. year: 2020–2022.

( Brand: Epi ), ( Manufacturer Part Number: 2171-E450920-ATV ), ( Part Type: Bearing )
The **EPI 2171-E450920 ATV EZ Bearing Greaser (44mm)** is a high-performance, precision-engineered lubrication tool designed exclusively for the rear drive components of the **2020 2022 Polaris Sportsman 850 ATV**, ensuring optimal performance, longevity, and reliability in even the most demanding off-road conditions. Crafted with durability and ease of use in mind, this **44mm EZ Greaser** features a **robust, corrosion-resistant stainless steel tip** that effortlessly penetrates the sealed bearing housing of your Sportsman s rear axle, delivering a consistent, high-pressure stream of **high-temperature, synthetic-based grease** directly to the critical load-bearing surfaces. Unlike traditional grease guns that struggle with tight or angled fittings, the **ergonomic, pistol-grip design** of this EZ Greaser provides a secure, comfortable grip, allowing riders to apply lubrication with precision even in awkward positions while minimizing the risk of grease spillage or over-lubrication. The **smooth, low-effort trigger mechanism** ensures controlled dispensing, making it ideal for both routine maintenance and on-the-go adjustments during extended rides. Built to withstand the rigors of frequent use, this greaser is **sealed against dust, dirt, and moisture**, preventing contamination that could compromise the integrity of your ATV s drivetrain. Whether you re tackling rocky trails, deep mud, or rough terrain, the **EPI EZ Greaser guarantees consistent, professional-grade lubrication**, reducing friction, preventing premature wear, and extending the lifespan of your Polaris Sportsman s rear axle bearings. A must-have accessory for any serious off-roader, this tool combines **practicality, efficiency, and reliability**, ensuring your ATV remains in peak condition for years of adventure.
### **Pros and Cons of buying a EPI 2171-E450920 ATV EZ Bearing Greaser (44mm) for a 2020-2022 Polaris Sportsman 850 Rear**
#### **Pros:**1. **Compatibility** This greaser is specifically designed for the rear axle bearings of the 2020-2022 Polaris Sportsman 850, ensuring a proper fit without modification.
2. **Ease of Use** The "EZ" design suggests a user-friendly application process, allowing for quick and efficient greasing without disassembling the bearing.
3. **Durability** High-quality grease can extend the life of the bearings, reducing wear and preventing premature failure, which is critical for off-road ATV use.
4. **Prevents Rust and Corrosion** Proper lubrication helps protect metal components from moisture and debris, which is especially important in wet or dusty conditions.
5. **Cost-Effective Maintenance** Regular greasing is a small investment that can prevent costly repairs down the line, such as bearing replacement or axle damage.
6. **Improved Performance** Well-lubricated bearings reduce friction, leading to smoother operation and better handling, which is beneficial for both off-road and on-road riding.
7. **Warranty Compliance** Many manufacturers recommend regular greasing as part of maintenance, and neglecting it could void certain warranties. Using the correct greaser ensures proper upkeep.
#### **Cons:**1. **Limited Availability** Specialty parts like this may not be widely stocked in local stores, requiring online purchase or special ordering, which could delay maintenance.
2. **Potential Over-Greasing Risk** If not applied correctly, excess grease can attract dirt and debris, leading to increased wear rather than protection. Precision in application is necessary.
3. **Cost** While affordable for a maintenance item, the price may be higher than generic grease guns or manual greasing methods, depending on where it s purchased.
4. **Learning Curve** If the rider is unfamiliar with bearing greasing, there may be a slight learning curve to ensure the greaser is installed and used correctly.
5. **Durability of the Greaser Itself** Cheap or low-quality greasers can wear out quickly or fail, requiring replacement. The longevity of this specific model depends on its build quality.
6. **Not a Permanent Fix** This is a maintenance tool, not a repair solution. If the bearings are already damaged, greasing alone won t restore them; replacement may be necessary.
7. **Environmental Factors** In extremely harsh conditions (e.g., extreme heat, cold, or heavy mud), even the best grease may degrade faster, requiring more frequent applications.
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### **Conclusion**
The **EPI 2171-E450920 ATV EZ Bearing Greaser** is a **highly recommended** tool for maintaining the rear axle bearings of a 2020-2022 Polaris Sportsman 850. Its **specific compatibility, ease of use, and preventive benefits** far outweigh the minor drawbacks, such as potential availability issues or the risk of over-greasing if not used correctly. Regular greasing with this tool can **significantly extend the life of your ATV s bearings**, improve performance, and avoid costly repairs.
For riders who prioritize **long-term reliability and off-road durability**, investing in this greaser is a **wise maintenance choice**. However, it should be used as part of a **regular maintenance routine**, not as a standalone solution for worn bearings.
### **Recommendation**
- **Buy the EPI 2171-E450920 EZ Bearing Greaser** if you want a **convenient, reliable, and Polaris-specific** way to grease your ATV s rear bearings.
- **Follow manufacturer guidelines** for greasing frequency (typically every 50-100 hours of use or as recommended in the owner s manual).
- **Store it properly** in a dry place to prevent grease from hardening.
- **Combine with other maintenance tasks** (e.g., checking tire pressure, inspecting chains) to ensure optimal ATV performance.
If you re unsure about installation, consult the **Polaris Sportsman 850 service manual** or a professional mechanic to confirm the correct greasing procedure. This small investment in maintenance will **pay off in smoother rides and fewer breakdowns** over time.
I need to exchange an item.: Brand: EPI, model Number: 2171-E450920-ATV. EPI EZ Bearing Greaser-44mm for 2020 2022 Polaris Sportsman 850 Premium ATV Rear: Application: Rear. This is helpful if you are buying multiple items.
Parts without fitment are to be assumed universal and may require vehicle modification. High-quality CNC machined with precision-drilled grease channel and dual O-ring seals, Quick easy way to extend the life of your wheel bearings, Simply remove wheel, brake caliper hub also spindle or shaft for model's that need 30mm greaser ; insert greaser tool use gun pack EZ Greaser is designed service Can-Am ID 39mm Can-AM bearings removing shaft, 40mm Polaris without 44mm.

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