backrest

Specifically, how is the Hondaline rack supported at the rear? We're looking to set up one of our '93 Nighthawks for day / weekend trips, with a minimum of storage. The Lovely Z1BEBE would like to have, at least, a backrest. In a perfect world, said backrest would be integrated into a top box...

Looking to get a backrest/sissybar for my 750C so the girlfriend can take a lean back every once in a while. I know a couple of them even had the added rack with them, so that'd be great! Located in Portland, OR for meetup/shipping.