Cyclist's stunt (7)
I believe the answer is:
wheelie
'cyclist's stunt' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for wheelie that I've seen before include "Bike trick" , "Cyclist's feat" , "Biker's stunt" , "Manoeuvre" , "A bicycle trick and a bin" .)