TLDR version is The channel nuts supplied suit series 4 platform. The series 5 is a wider channel nut. Makes it a nightmare to fit, solution requirements are channel nuts to suit a series 5 platform. Love having the table up there. Love every Kaon product except this one for installation. Long short version. I bought the FJ table slide which requires two spacers. *The self clench studs are too short thus supplied with longer 40mm button head bolts. *Trying to feed 6x washer into a channel to sit above the channel nuts is bloody hard work. You need to do this 6 times. The button bolt needs to go through the backbone, 2x spacers, then the rack, a supplied washer then into the series 4 channel nut (rectangular alloy channel nut supplied by Kaon). *It's a nightmare of an installation and the washer only has a small purchase area. I modified the original Rhino Rach series 5 channel bolts but punching out the original clench studs and tig welding a 40mm stainless bolt. This made the job somewhat easier and still not the ideal solution. The ultimate solution is to have channel nuts to suit the series 5 platform as these are wider by a few mm than what the series 4 is. Installing would be super easy as you would slide in the channel nuts, place spacers (20mm height total) and place a bolt from underneath the roof rail.