The bike I picked up a couple of months ago had the docking hardware so I grabbed a detachable backrest off of ebay. This weekend was the first ride for my wife on it and she said the vibration through the backrest made it impossible to lean back on it.

Are there bushings that need to be replaced on the docking hardware, or???

 

Tell her to stop her whining and appreciate the fact that she has a backrest. JK. Not enough info. Is it an HD backrest and if so are the bushings (docking points) okay?

 

It's a HD backrest, Docking points look to be OK to me, but it's the only dock I have seen. Maybe just remount it, I may have not got it square in the rubber bushings?

 

Just checking to see if there is a common error or problem with these.....