You have to notch the caliper bracket with a dremel tool or some device for the rotor buttons to clear.
From Brake Tech's site: "All Japanese Sportbikes with Nissin (rear) calipers require a small amount of relieving of the OE caliper bracket to provide clearance for the floater button flange head".
These rotors are not produced in great quantities, they're produced in batches based on rotor diameter, so patience is not only a virtue, it's a necessity.
I waited 4 months for mine to ship.
Last edited by SubSailor; 09-17-2013 at 02:12 PM.