Kicker 6x9s (2) replaces HK subs! rare!
Two Kicker 6x9s, replaces the weak subs the Harman Kardon system comes with. You can run an amp to it as it supports 125 watts each. I ran it with just the stock system and the bass hit a lot cleaner. $100 obo
This item is discontinued so it is very hard to find and are only the few that will fit in the stock harmon kardon enclosure. Last I heard it will only fit the coupe enclosure so be sure to research. thanks!