Is it bad to go flat out?

[TYE]

I have been doing drags with my cousin on my pit bike but am hesitant as to going flat out in top gear because the bike starts to vibrate a lot and I was just wondering if I go flat out will my engine blow or get wrecked?

 

[zwebx]

its arguable, i have personally riddin my bike flat out for about 15 minutes in last gear (a little bit of on and off) and not had an issue... however if i was running a slightly lean tune my bike would get much much hotter than at the rich tune i had it...

 

[nicko451]

Its fine mate but just don't valve bounce.

 

[TYE]

Thanks for the quick answers. I'll beat him everytime now