According to Galfer,the idea is that there is always a leading edge of the rotor striking the pad,which is where most of the braking effect comes from.The edge of the rotor basically digs into the pad,creating more friction.This unfortunately tends to eat up your pads quickly,but they are always fresh and ready to go, since glaze can never build up.
I got one for my FZR1000 too, since its stock rear disc is wasted,and I got another for the B4 since I switched to a 4.5" SV650 rear wheel.They are a bargain on Ebay for 120 bucks and some places throw in a set of Galfer pads too!
Ill be selling the rotor seperate from the wheel,so long as the Loctite decides to play nice!.....probably 50 for the rotor and 120 for the wheel,the powdercoat alone cost 100!Im figurin' some GS500E owner will snatch up the wheel.....