Value Accessories sells what I believe are Big Bike Parts brand driver backrests. They offer both a small and large backrest. This link will take you there -
Smart Mount Dr Backrest, Can-Am Spyder RT 10+ (Std or Lg Pad)
I chose the small backrest and it's entirely acceptable, but if I were to do it over again I'd opt for the large backrest. The large version is $159.95. And it more closely approximates the size and comfort of the BRP backrest thought this one costs much less.
Installation, by the way, is not difficult at all. Removing the saddle is the most cumbersome part. Spoiler alert - do not lose either of the two shiny metal sleeves the seat hinge bolts pass through. You'll have to order new ones, wait for them to arrive, after which you'll find the one that disappeared. I wonder how I know that?!
The black beauty is mine and has the small Value Accessories backrest. The red beauty is my bride's and has the large BRP backrest (vintage 2012). Hope this may be of some help.
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