Hayes cx expert disc brake 160mm rotorin an effort to meet the increasing demand for drop bar specific disc brakes and accommodate a wider price range of bicycles hayes extended their mechanical brake lineup each will offer best in class performance at their given price the hayes cx expert is the current industry leader in mechanical brakes featuresride style xc weight 195g caliper onlyrotor l series 160mmgraphics pad printpad material semi metallicpad retention bottom loadbuyhaye