Mounting is easy, I'm trying to extend the height of the seat on my Cruzbike Silvio. I'm 6'6" tall. I see seats for recumbents online for $250 - $350! Currently just using a 1/4" plywood "extension" to the top of the seat. Works, just not very elegant. Don't need carbon, inexpensive is good. And actually strength is not a factor, it will be 'backed' by the silvio seat back.