I have a nice Rockford fosgate 12" sub in single Rockford box with matching Rockford amp, amp is a mono 250x1 and hits way harder than my two 10s with an 800w amp. This was in my wife's car and with a baby a few weeks away I decided to buy her a brand new car and kept this from her old car. I would like to trade it for a decent mountain bike prefer a 29er soft or hard tail doesn't matter just using it on my off days at the gym and for riding in town and light trails let me know what u have . Text is the best way to get ahold of me. Thank you