VW Retrofit LTD - Golf MK7 TDI upgraded with Helix subwoofer kit. 2h ish job including fitting and programming sound parameters. Quite good results from such a small box 😊 | Facebook
Mk7 GOLF/GTI HIDDEN SUBWOOFER (Updated with Demo) - YouTube
MK6 Golf R (2010 - 2014) Underfloor Sub Box (Passenger Side)
Installed a spare tire subwoofer in my GTI : r/GolfGTI
Golf MK5 / MK6 Underfloor Sub Box
Custom Sub & Amp Combo - MK6 GTI/Golf R | VW GTI MKVI Forum / VW Golf R Forum / VW Golf MKVI Forum / VW GTI Forum - Golfmk6.com
10" 500-watt Subwoofer by SSV Works | Big Sky Golf Cars