Worn belt can affect top speed http://www.snowmobileworld-s2.com/forums/iB_html/non-cgi/emoticons/confused.gif?

no kidding, another major factor is engine alignment. Most people don't have this checked each year and you would not believe the perfomance differance, when the engine is aligned properly.

sorry i dont understand no kidding (im french) You mean that won't affect top speed???

Yes it will affect top speed.

i have had worn belts affect top speed by as much as 10 mph