Alpine - SPC-600G7 Subwoofer System for VW Golf 7, Golf 6 and others
Amazon.com: Add A Bass Subwoofer Amplifier Adapter Interface w/Amp Remote Wire to Factory OEM Car Stereo Radio for select VW Made for Jetta Golf CC Passat EOS Tiguan etc- Vehicles listed below :
Subwoofer/Amp install on Mk5 Rabbit, GTI, Golf and Jetta - YouTube
VW GOLF MK5 MK6 8 10" STEALTH SUB SPEAKER ENCLOSURE BOX SOUND BASS AUDIO CAR NEW | eBay
VOLKSWAGEN RABBIT/GOLF/GTI/R32 SUB ENCLOSURE 10" Mk5 and Mk6 - SRQ Customs