It would benefit any grade of the Aurion, however it obviously won't handle like the Sportivo's do with them installed. The suspension on the Sportivo is slightly different to the AT-X, Presara, etc, and because it rides a little stiffer to start with, the benefits of the Ultra Racing gear can really be taken advantage of. It's not to say it isn't a good idea to get it, you just can't expect to throw it into the corner in the same way as the Sportivo. Go for it o12lando you wont be dissappointed,it's a huge huge improvement prolly more so on the ATX (sorry Daryl this is only what i think) than the Sportivo,my reason is the Sportivo susp is already set stiffer than the ATX and by adding these bars to the ATX it really adds a huge handeling improvement (stiffens it up heaps with lowered springs of course),at least twice as firm as stock(my opinion),i proved this to myself chasing you thru the hills in Melbourne with ease (i was only going bout 70% with no probs) and the only thing that let me down that day were the standard shocks...change them Sportivo shocks/KYB shocks and what differences are left between the Sportivo & my ATX suspension? p.s hehe i think my tyres might have played their part that day also... B) that's cool I might give it a try oneday :D