Suit adapted with new components (5)
I believe the answer is:
units
'components' is the definition.
(I've seen this in another clue)
'suit adapted with new' is the wordplay.
'adapted with' indicates anagramming the letters.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'suit' anagrammed with 'n' gives 'UNITS'.
(Other definitions for units that I've seen before include "Measures of alcohol" , "Single items or standard quantities" , "Shops in a mall, for example" , "Individual things or groups" , "Detachments" .)