Just added a Mutazu Harley style trunk to the Vulcan, took a 100 mile trip today and as I was almost home, a driver motioned to the back of my bike. Pulled over and the backrest had come off on one end and pulled the middle bolts with the plastic out and was hanging on the last two bolts. As I opened the lid the lock disintegrated and fell out. The attachments for the backrest are sketchy at best. A large rubber cylinder that the head of 2 bolts attach to. Very loose in my opinion. Poor engineering. The top got scratched up as well. Sucks as will be heading out on a 1000 miler trip soon. I have contacted Mutazu and will post their reply. Just need the top with key and backrest, though may think twice about mounting it again.