Not saying they are not any good but Several things have to be considered taking that you want it to go faster.
Handling at higher speed ?
Will highers speed make the bike unstable
and cause you to lose control.
Will the engine take the higher speed thrashing
Souping up and engine that's not meant for higher speeds could could cause serious ireparable damage.
Brakes: they may not be efficient at higher speeds.
Apart from that I agree with ni hao.
Oh! Buy a dictionary Betta! Better.
No wonder the English language is going down hill
ennit!
Bob, September 2010