Specially formulated compounds create a durable and dependable belt that provides optimum performance.A. From there, each belt is specially designed for its application. Proudly made in the USA, the Ultimax family includes Ultimax MAX, Ultimax PRO and Ultimax XS snowmobile drive belts; Ultimax HQ, Ultimax UA and Ultimax XP drive belts for ATVs, UTVs and SxSs; and Ultimax MD (Multi-Duty) belts.