Fremax Carbon+ rotors are made of special cast iron alloy with higher carbon content. High carbon discs have been successfully used in high-performance car racing applications. Fremax has included this technology in its wide range of applications. Optimal thermal conductivity Helps to prevent brake judder Avoid braking noise due to better damping coefficient Higher resistance to distortion and thermal cracking Improved braking safety and performance High temp painted rotor hat/hub for corrosion resitance and great looks Fremax provides a special finishing on its entire line of brake rotors and brake drums. The hub of the part is painted with an automotive paint that withstands high temperatures and ensures maximum protection against corrosion