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Hayes Lemmerz has made an enormous leap in technology by creating a new “4 in 1” disc rotor that solves brake industry noise, dimension accuracy, thermal diffusivity and “hot spot” rotor problems. By closely adhering to a disciplined system of concurrent planning, product development and production feasibility studies (which included material development and CAE design and dynamometer and vehicle tests), Hayes has solved the brake industry's top four warranty concerns. Development of several propriety manufacturing methods, production system/equipment and quality assurance procedures followed to bring this product from the Development Laboratory to the Production Plants. Hayes' new brake rotor is designed with damped iron composition, 72 curve fin rotor geometry and is then processed using Hayes' patented ULTRA-Q process. The 72 curve fin rotor design, developed through previous Hayes efforts (Ref-1,2,3,4) creates a 100 degrees F cooler running rotor.