Registered Forum User
Ducati Corse
Posts: 3,893
Join Date: Sep 2003
Location: The North
Mood: Daft as MartinH after too much Smirnoff Ice
I'll second rushjobs comments for the st4s, the 14 tooth sprocket is the best/cheapest way to more useable performance.
Not sure about st2 though but for the price its got to be worth trying.