Reading back over this, it strikes me that the product management of Buells is a little confusing. I'm not sure that the differences between models is all that material, but I'm looking to buy an XB12 and enjoyed a test ride on an 07 Ss (but didn't move quickly enough).
There are lots of STTs on the market now and I can mod one to suit (de-beak, etc), since they are the 'same' as the Ss Longs. Except, I rode a 'short' (07-08) Ss, which is different from the 09+ 'tall' Long, since the Ss took on the STT's tubes and got taller that year.
So, it seems that in 07 & 08 there were 4 lengths of suspension: Scg, S, Ss, and STT. Now, there are only the shortest (Scg) and the tallest Ss(which is the old STT).
The euro-only SX is the old S, and is the same as the XB9SX chassis.
Is that clear? Have I got it? Yah.
- Charlie