The 2008 Busa peg spring is smaller diameter than the 99-07. The 2008 spring can be forced over the sleeves or bushings,.....but it will leave scratches. The Gen 1 springs are only 5 or 6 dollars for the two springs from a dealer.Gen 2 springs cannot be used with the Buell pegs ? If not why... I'm assuming they are too big? Hence the necessity for Gen 1 springs only?