OK I realize that at 300 lbs I won't get top speed for my sled but I had hoped I would get more than 85. I bought the sled late last spring and have only put about 500 miles on it. I dunno I have a late build and I know it is lower geared. It does really well getting up to 80 but it takes a while to get that last 5mph. I had it at the dealers this fall and had it all checked out so it should be good. Is it just my size or do I have a bigger problem somewhere? Is there anything I can do to get another 5 - 8 mph without spending a lot of $$? My riding partner with the zr800 walks all over me.