Doing donuts maybe.[img]i/expressions/face-icon-small-wink.gif[/img]

IMO a blaster doesnt stand a chance against a 125 in accelleration or top speed. Bikes are faster on the mx track and usually on the trails as well. 100cc bikes are typically more tuned and geard for trail use and so will be slower with more bottom end power than thier 85cc and 125cc cousins. IMO that's going to be your best shot.