Not to sure. I did have mine up to 100 once and that was it. I had to pass an 18 wheeler before my lane ended and the other people weren't letting me over. Not sure how fast it will go. It's got a governer in there I think.
I'm not sure this is a very good thread, but I do know it can get up to 120 with no problem. I have been thinking of taking it out to the local drag strip. I think it would be worth it to see what a stock 05 X can do in a 1/4 mile.