Hit gear (7)
I believe the answer is:
clobber
I believe this clue is a double definition.
'hit' is the first definition.
(I've seen this before)
'gear' is the second definition.
(thesaurus)
(Other definitions for clobber that I've seen before include "Lick" , "Thump; clothes (slang)" , "what one barely lacks" , "pound)" , "Kit" .)