EBC 2010-2016 Harley-Davidson FLHTK Electra Glide Ultra Limited STREET ROTOR MD521. The vendor part number is MD521.. Read title careful to know what you are getting. Catalog decription� Standard rotors are made from billet steel Contour rotors are made from stainless steel and enhance the look and performance of your bike All front rotors feature a forged alloy center hub All rotors are sold each-contour front rotors are universal left/right fit mount