I've got one fitted at the monent. Its from Renntec. Bought it through this forum, but they appear every so often on ebay, where I've seen them go for £40.00 ish. Unfortunately I can't fit the pillion seat plastic cover when its on, but it can be removed just by unscrewing two allen bolts, once the mounting stuff is bolted to the sub frame.
Could be that mine bolts to the subframe with 4 bolts - can't really remember. But the grab rail itself definitely is bolted to its bracket with 2 allen bolts. Maybe its not a Renntec. Didn't really check. Just going on what the guy said it was. From memory I bought it from "blueveetwo", or a name like that!
Perhaps its a rentec but without the subframe fixing kit, that you have to remove the rear tailpiece to fit? and then that kit gives you the mounting points for the 2 vertical bolts and the 2 smaller ones fit into the holes that fix the rear tail piece
I have a renntec and it fits to the subframe and i still can fit the rear seat cowl its a little bit of a pain taking the seat off but im sure its a four bolt type
Thats the one Stormtrooper! It was easy to fit 'cept that I lost one of the subframe fixing screws down the sub-frame tube, so since I didn't have one of those magnetic things and didn't fancy tipping the bike upside down, its still in there!