My Garage
Select a ride to guarantee fitment.
My Garage
Add your vehicles to your garage. Several features will then be available to facilitate your searches.
- Store vehicles in your garage
- Easily find guaranteed fit products and accessories
- Get product recommendations
Available Online
Free shipping on orders over $99
Standard Fulfillment: -
Expedited Fulfillment: -
Lowest Price Guaranteed
Fast Shipping
Easy Returns
Description
Bred from a rich history of experienced belt builders, the Dayco XTX belt is specifically engineered to maximize the performance of the most extreme, high horsepower snowmobiles. Beating the competition on the race course is just one of many aspects that sets the XTX belt apart from its competition. Specially formulated high temperature Polymer along with the highest level of engineered reinforcement proves to perform better in belt operating temperature and efficiency than leading competitors. Its innovative break-through design of deeper cogs on top and rounded cogs on the bottom yield the advantages of ultimate flexibility and longer belt life while being a better alternative to the original equipment belt.
Key Features
- Faster and more consistent throttle response at high speeds
- Quicker throttle response at mid-speed acceleration
- Greater secondary acceleration at high RPMs
- Greater secondary acceleration as primary acceleration increases
- Reduction in slippage during the highest levels of torque
- Providing more power to track
- Better performance during deceleration (more responsive engine braking)
- Tested and proven reliability at well over 12,000 RPMs
- Cooler-running temperature than the leading competitors
Technical Specifications
- MFG. Part Number XTX5057
Vehicle Information
Polaris Rush 850 Snowmobile (2019)
The 2019 Polaris Rush 850 is a performance snowmobile that marked the introduction of the Patriot 850 engine. This 840 cc, 2-cylinder engine was acclaimed as the most powerful and quickest-reacting two-stroke in the sport, delivering unrivaled acceleration and response. For the 2019 model year, the Rush 850 was primarily offered in PRO-S and XCR trims, exclusively available to SnowCheck program buyers. The 2019 model year was significant for the Rush 850 due to the introduction of the all-new Patriot 850 engine. This liquid-cooled 850 twin engine represented a major upgrade, designed for enhanced durability and superior performance. This new engine was a key highlight of Polaris's 2019 lineup. The Rush Pro-X models were discontinued that year, with buyers shifting towards the XCR trims. FAQ:
Q: How can I ensure this part is compatible with my snowmobile?
A: To guarantee compatibility, please use our year and edition selector located at the top of the page.
Maintenance
| Component | Interval | Details |
| Engine Oil and Filter | Break-in: 25 h, 800 km, or 1 month (whichever comes first). Following break-in: 50 h, 1 600 km, or annually (whichever comes first). | Always change the filter when changing the oil. |
| Drive Belt | Inspect and adjust as needed. Inspect pre-ride, then at 240 km, 800 km, and 1 600 km. | Remove for off-season storage to prevent damage and condensation. |
| Spark Plugs | Inspect at 240 km, 800 km, and 1 600 km. Replace at 1 600 km. | Recommended gap: 0.7 mm. |
| Air Filter | Break-in: Inspect and replace as necessary at 25 h or 1 month. Regular maintenance: Inspect, clean, or replace as needed. | Ensure proper installation of the filter and airbox cover. Inspect ducts and screens, clean as necessary. Inspect main filter element weekly and pre-filter often. |
| Coolant | Check level daily. Inspect system every 800 km or 6 months. Flush system every 8 000 km or 5 years. | Inspect system for cracks and leaks. Test coolant strength seasonally and system pressure yearly. 50/50 Extended Life Coolant should be replaced every 5 years. |