The crazy part is I had no idea I have gone that fast! I just noticed it last night and saw that one thread about it being difficult to achieve top speed! This is the ultra eagle. I also haven't hit any crazy downhills around here. If I did it would go over 50 for sure! But that's a bit too sketchy for me! The thing is that it feels really stable at high speeds it doesn't feel like it's going "crazy" it feels smooth and stable that's why I never knew I hit 48+ mph I have seen it hit 40 on the display.