Downtrodden, they go round on bikes (6)
I believe the answer is:
pedals
'bikes' is the definition.
(I know this)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for pedals that I've seen before include "Foot levers" , "Levers on a piano" , "Foot-rests or drivers on a bicycle" , "Cycles" .)