Stripped down minibike smashed into bomb site (6)
I believe the answer is:
bikini
'bomb site' is the definition.
(I've seen this before)
'stripped down minibike smashed' is the wordplay.
'stripped down' means to look at the middle letters.
'smashed' is an anagram indicator.
The middle of 'minibike' is 'inibik'.
'inibik' with letters rearranged gives 'BIKINI'.
'into' is the link.
(Other definitions for bikini that I've seen before include "Infamous atoll" , "A small two -piece bathing costume" , "practised here with explosive results" , "Women's tiny bathing costume" , "Beach wear" .)