SuStel:

mu' chu' wIHevpu': qam Do Duj bicycle.

Can we use this word too, for a bike (I mean like ducati, yamaha etc)
? Its hard with a bicycle to reach 300 km/h ! hehehe

Oh, I didn't realize you were talking about a motorcycle. No, you can't use qam Do Duj.

Following the pattern set by puH Duj, qam Do Duj, and wa' rutlh qam Do Duj, I'd probably say cha' rutlh puH Duj for motorcycle.

-- 
SuStel
http://trimboli.name