Put a stop to glitch so bike keeps up (6)
I believe the answer is:
kibosh
'put a stop' is the definition.
(I've seen this before)
'glitch so bike keeps up' is the wordplay.
'keeps' says the answer is hidden in the clue.
'up' is a reversal indicator (in down clue: letters go upwards).
'hsobik' is hidden in the letters of 'glitch so bike'.
'hsobik' backwards is 'KIBOSH'.
'to' acts as a link.
(Other definitions for kibosh that I've seen before include "Rubbish - nonsense" , "Put the mockers on" , "Finish off" , "Make impossible to happen" , "Fatal to put this on" .)