Violent storm in progress splitting bike (7)
I believe the answer is:
cyclone
'violent storm' is the definition.
(cyclone is a kind of violent storm)
'progress splitting bike' is the wordplay.
'progress' becomes 'on' (I am not sure about this - if you are sure you should believe this answer much more).
'splitting' is an insertion indicator (some letters split a word into two).
'bike' becomes 'cycle' (synonyms).
'on' going into 'cycle' is 'CYCLONE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for cyclone that I've seen before include "Spiralling wind" , "Typhoon" , "Whirlwind or twister" , "kind of weather?" , "Depression - tropical storm" .)