Back rest
Item is made very well the only issue I had was this is not made for a riker with a side case I had to modify the bracket so it would fit on the bike website doesn't say that it doesn't fit a riker with a side case arm but overall I got it to work and it fits now but it had to be modified

Back Rest
It holds Me firm in my seat no more sliding back

MUST HAVE MAX MOUNT
Was soooo excited to get this for my Wife as she has back issues, and needed more comfortable seating for longer rides. So I got this pretty awesome backrest, after researching and reading reviews, etc.
Unfortunately it FAILS to mention you MUST HAVE THE MAX MOUNT for install. All the pix I found, in the reviews AND in the video shows the max mount on the Ryker. But watching the video stating mount right under behind Driver seat, is pretty vague. Plus the visual you get it shows as though it's being mounted to the seat itself where the (2) existing holes are, yet I can't seem to get the NUTS on in between brackets. Too tight of a space... and I have small hands!
Will try again just to VERIFY.. will update if in fact was able to install W/O the MM. So far... a little disappointed! : / ( current rating is PROR to my final conclusion )

Worth it!!
Makes a bigger difference than I thought it would. I have a 21 Rally 900, you do have to get a little creative on the install but dont let it scare you. Super comfortable, easily adjustable, great product!!

2 up backrest
Easy to install and has greatly improved the comfort of my ryker