Gearing, rider weight, elevation, snow depth, climbing, flat, track length all play roles.
I had mine up to 137mph the other day. Although I did fill it up with race fuel rather than premium, and drank like 4 red bulls.
Anybody know what the top speed of an 800 etec summit
So that don't count you had wings!
i wouldnt push it. anytime ive ever blown a belt it was going way to fast for a mountain sled. BANG. seems they like the heavy loads rather than the high speeds.