In order to install the Type R 22mm rear swaybar on your GSR, you'll need a special installation kit. Our Geezers aren't reinforced like the R's are. So, some folks have had the Type R bar rip out of their chassis. I think the BSQ kit will allow you to install the Type R safely (I don't have details on that kit, but maybe someone else does).

Another, maybe better, option would be to go with Comptech's 22m rear sway bar/rear lower tie bar kit. They guarantee that it won't tear out. The set is about $400.