So I was working on a customers 2012 aprilia tuono last night. What a nice machine, sounds very cool when you start it up, and has high quality parts all over. Rarley do I ever get to install thier "goodies" I like to call them. He purchased r&g bar ends, two sets of frame sliders and left and right side case covers $$$. So I get the oil done, the coolant replaced with engine ice, clean it up a bit. It's already past 5, I'm almost done installing everything for the day. So his frame sliders are on everything's done and I look at the very last part... They are another set of frame sliders? but a different style which uses both engine mounts instead of just one and it's more like a delrin block as aposed to the cylindrical puck style. I giggle a bit because I'm pretty sure it's one or the other that can be fitted and not both. I over heard he will be racing the bike, not sure where though. Anyone have any insight on these suckers? Before you ask, they will not work in conjunction with each other. The reason I ask is because I know a lot of people here have used r&g products before, I have not and maybe I'm missing something here.