if you do fit a rotor kit on make sure that if is running a primary (rotor on the same rod as the clutch) you will need a billet clutch basket housing or it will go BANG over time.
best bet would be take your stock flywheel off then get it lathed to shave some weight off it as then it will rev up quicker and you wont be prone to the cost of having a clutch basket explode due to the sheer mass lost of having a inner rotor.
main cause of baskets going bang is having the bike pinned in 3rd and 4th gear hence the revolutions are much more when pinned in these to gears
hope that helps
