ULTIMAX High-Power Snowmobile Drive Belt - XS811 Premium Performance Belt for Maximum Horsepower

Description

Elevate your snowmobile's performance with the ULTIMAX XS811 Drive Belt, engineered for high-horsepower machines that demand maximum power transfer and durability. This premium belt delivers consistent performance in extreme cold, heat, and rugged terrain, ensuring reliable operation when it matters most.

Key Features

  • Aramid Reinforced HNBR Rubber: Resists heat, UV degradation, and maintains grip in extreme cold for long-lasting performance.
  • XS Profile Construction: Precision-engineered for optimal power transfer and compatibility with high-output snowmobile engines.
  • 133.7" Length x 1.367" Width: Perfectly sized for maximum contact area and efficient torque transmission.
  • 1.2 lbs Weight: Lightweight yet durable design reduces strain on engine components.
  • One-Year Warranty: ULTIMAX guarantees quality with full replacement coverage for defects.
  • Manufactured in the USA: American craftsmanship ensures precision and reliability for demanding conditions.

Why Choose This Product

Whether you're conquering backcountry trails or competing on groomed tracks, the XS811 delivers the durability and efficiency needed for peak performance. Its advanced rubber formulation resists degradation from heat and UV exposure, while the reinforced construction ensures long-lasting reliability. As a proudly Made in the USA product, this belt meets the highest standards of quality and performance for serious snowmobile enthusiasts.
SKU: GMFC3C87B4
MPN: XS811
UPC: 785201465543
Category: Belts
Brand: ULTIMAX
Stock: In Stock
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Elevate your snowmobile's performance with the ULTIMAX XS811 Drive Belt, engineered for high-horsepower machines that demand maximum power transfer and durability. This premium belt delivers consistent performance in extreme cold, heat, and rugged terrain, ensuring reliable operation when it matters most.

Key Features

  • Aramid Reinforced HNBR Rubber: Resists heat, UV degradation, and maintains grip in extreme cold for long-lasting performance.
  • XS Profile Construction: Precision-engineered for optimal power transfer and compatibility with high-output snowmobile engines.
  • 133.7" Length x 1.367" Width: Perfectly sized for maximum contact area and efficient torque transmission.
  • 1.2 lbs Weight: Lightweight yet durable design reduces strain on engine components.
  • One-Year Warranty: ULTIMAX guarantees quality with full replacement coverage for defects.
  • Manufactured in the USA: American craftsmanship ensures precision and reliability for demanding conditions.

Why Choose This Product

Whether you're conquering backcountry trails or competing on groomed tracks, the XS811 delivers the durability and efficiency needed for peak performance. Its advanced rubber formulation resists degradation from heat and UV exposure, while the reinforced construction ensures long-lasting reliability. As a proudly Made in the USA product, this belt meets the highest standards of quality and performance for serious snowmobile enthusiasts.
SKU GMFC3C87B4
MPN XS811
UPC/GTIN 785201465543
Brand ULTIMAX
Category Belts
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Reviews

Make Model Years
Arctic Cat ZR 9000 Thundercat 2018-2024
Ski-Doo Renegade X 850 E-TEC 2019-2024
Polaris RMK 850 2020-2024
Yamaha Sidewinder SRX LE 2017-2024

Frequently Asked Questions

Yes, Ultimax XS belts are pre-stretched for immediate optimal performance without initial stretch-out.

Check exact model against fitment chart; confirmed for Renegade X and Summit X 850 E-TEC models.

Designed for 200+ HP snowmobiles with XS profile for maximum grip and heat resistance.

Vary throttle for 1 hour, avoid WOT until 50 miles, then full break-in complete.

Installation Guide

Difficulty Medium
Est. Time 45 min

Tools Required

  • socket set
  • torque wrench
  • belt breaker tool
  • pry bar

Pro Tips

  • Run belt at 50% throttle for first 50 miles to seat it
  • Clean clutches thoroughly before install
  • Use belt alignment tool for precision

Common Mistakes to Avoid

  • Not breaking in the belt properly
  • Incorrect tension adjustment
  • Forgetting to align clutch sheaves

Comparison vs Stock/OEM

Superior aramid cord and HNBR compound vs. OEM rubber/kevlar

Improvements

  • 50% longer life
  • Better heat resistance (up to 220°F)
  • No stretch, consistent performance

Considerations

  • Higher cost than OEM

Durability & Warranty

Expected Lifespan 1500-3000 miles (vs. OEM 800-1200)
Warranty 1 year manufacturer defect warranty
Maintenance Inspect tension every 500 miles, clean clutches regularly

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