These are the Fox Racing Shox Float Evol p/n 830-21-013. These are a 17" shock that will work with any arms designed to utilize the stock mounting points. I got them to use with the Houser sli-cast setup on my KFX but got a good deal on some elkas instead. According to Fox, they will also fit on a Honda 450R using arms designed to utilize the stock mounting points.
These are brand new and have never been installed. Comes with all hardware and instructions.
Retail is 1295, selling for 950.00 shipped.