21 Turbo S, 18 XPT Dynamix, 18 XP 1K
I just put in the AA S2 kit in my 21 Turbo S. I have not had a chance to ride it yet though. Hoping to get out tomorrow though. I also got the primary clutch cover from AA. The springs in the kit are much stronger than the stock ones. I didn't even want to run it stock other than about 50 miles to break it in. I have the AA 1-3 level tunes and the AA exhaust. Did not trust the stock clutch to hold with a tune. Mike says it is a good clutch once you add the goodies to it. Just weak springs stock and needs weights if you tune or change tire size. Once he has the helix ready in spring I will be putting one in also.