Sorry to bring up such an old thread, but I just happened to of found my Trek transit (2001 model) in the storage. I found the mag wheel that converts it into a jogger, but I can't find the attachment bar that hooks it up to the bike. I've looked all over google and it doesn't seem like anyone is selling any parts for it. Does anyone know where I can purchase this unit? I tried ebay and my local bike world - to no avail.