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
EMPTY! Volkswagen Golf R GTI Mk5 Mk6 10inch sub fibreglass subwoofer box | eBay
Volkswagen Golf GTi Subwoofer Upgrade for Lansford Client
For Vw Golf 7/7.5 Mk7 Gti R-line Whole Set Dynaudio (4 Tweeter/4 Woofer/1 Subwoofer/1 Amplifier) A Pillar(black/gray) With Cable - Speakers - AliExpress
Helix Sound package for Mk7/Mk7 5 Golf - Supply and Fit -
Subwoofer Added on Stock Sound System | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum
Alpine - SPC-600G7 Subwoofer System for VW Golf 7, Golf 6 and others