My extensions are set at 4". Any longer and you will take out the tail light. As it is, I had to modify and relocate the rear subframe 1" higher to get sufficent clearance when fully slammed. Good news on the GenII is that the battery box doesn't hit the swing arm in the fully lowered position anymore. Bad news is that the new (very expensive) taillight is trashed if your not careful. Catalyst just came out with the extended street tail, so later this year I will go +8" on the arm
Elganja, got your PM; wish I could help you with a set of rear drag pegs, but I don't have time to get 1/2 of my stuff built up.