Carlisle Ultimax Max Drive Belt - 1 3/16in. x 42 11/16in. MAX1092M3 The Ultimax family has updated the Max2 belt to the all-new MAX drive belt for the best economical snowmobile belt on the market. This general service belt has an improved cog design for greater flexibility and cooler running. The new thicker MAX has added strength that provides longer belt life to meet the demands that older and newer machines require. Weight: 1.175 lbs.