Speaker Adaptor VW Golf Mk6 & Polo 165mm | Celsus UK
Mk6 GTI door speaker upgrade : r/GolfGTI
Audio Visual World - Pioneer TSA1733i - A Series 17cm 3-way Coaxial Car Speakers 300W Front Door Speakers with CT25VW07 Upgrade Kits for Volkswagen Golf, Amarok, Beetle, EOS, Lupo, UP!, Polo, Scirocco,