EBC Brakes MD629XC Full Floating Contour Rotor EBC Full Floating Contour rotors are the toughest and yet the lightest sport and race brake rotors you can put on your bike Contoured profile reduces weight by 7.5 percent without reducing actual 'cooling mass' of disc New German mill rolled heat treated stainless steel rotor blade with vertical scraper slot system to remove dirt, dust and debris quickly from the braking area Unique fully overlapping vent hole pattern reduces weight, cleans disc blade and helps deglaze pads Features EBC's square sided drive button system to completely eliminate the chance of rotor warping, extend rotor life, and improve braking consistency