The current bike rack can be retrofitted in a couple of different ways. We can remove the black box and install the bike rack for around $1000. You can also install the rack yourself; it is not difficult but is a bit fiddly. We use 1Up roof rack mount bike racks and some custom spacers to mount the racks to predrilled holes on the front of the trailer tongue. We can send you the spacer kit, hardware, instructions and 15 minutes of phone support for $100. This allows you to purchase the bike racks directly from 1Up and do the install yourself.