Up for sale is ULTIMAX BY TIMKEN XS BELT SNOWMOBILE XS813 XS813. The vendor part number is XS813. Please read title to know what you are getting. The catalog decription.... is Peak power, peak efficiency. For screamin’ hi-performance on the track or on the trail. Ultimax XS is designed for high horsepower sleds delivering superior performance and longer belt life. Ultimax XS features a specially formulated rubber compound found in no other snowmobile belt.Designed for modern high-power snowmobilesNew design gives better consistency and greater resistance to flex cracksUsed on many top race sleds because XS can handle the brutal power and extreme temperatures better than any other belt on the marketDesigned from decades of experience in high-performance powersports CVT drivesProprietary high-temperature rubber compound withstands the power of today’s biggest sleds without sacrificing gripStrong and stable aramid cord for zero stretch and maximum tensile strengthBuilt with modern methods to reduce variability and eliminate “classic” failure modesOne-year manufacturer's warrantyMade in the USA