Hi folks!

I'm looking for a back rest cushion. It's for a 2012 corpus 3G backrest. The backrest is 16 inches wide measured from the laterals; and its 20 inches from the seat to the top of the backrest. We had to adjust the height, so it's taller now: the line on the removable part of the backrest is now set at 24 inches. I hope you guys can help find what I'm looking for.
Thanks,
Josh