To gear up anew, you need capital (6)
I believe the answer is:
prague
'capital' is the definition.
(capital of Czechia)
'to gear up anew' is the wordplay.
'anew' indicates anagramming the letters.
'gear'+'up'='gearup'
'gearup' anagrammed gives 'PRAGUE'.
'you need' acts as a link.
(Other definitions for prague that I've seen before include "Rather quiet" , "Gear up for this European city" , "Capital city of Czech Republic" , "European capital" , "Czech Republic's capital" .)