Rotor Material: Racing Formula Alloyed Gray Iron & Heat treated
Surface: EDP Coating w/cross cut grinding on friction surface
Replacement ComponentsRotor Ring: D305-01-381 (open slot), D305-01-351 (drilled & slotted), D305-01-311 (straight slot)Fasteners: FK1
NOTE: Retaining and jack screw holes might have been eliminated to prevent the screws from stripping and breaking, causing tremendous effort to remove and replace the rotors. Our two-piece rotor hats are made of aluminum which is easier for installation and removal. See detail view here.
Click here to learn how RB two-piece rotors are built differently than the competition.
Two-Piece Feature Comparison Chart