An atherectomy system includes a composite atherectomy burr including a first atherectomy burr component formed of a first material having a first material property and a second atherectomy burr component formed of a second material having a second material property, the second atherectomy burr component extending within and secured to the first atherectomy burr component, a drive mechanism adapted to rotatably actuate the composite atherectomy burr and a controller that is adapted to regulate operation of the drive mechanism. The second atherectomy burr component may be mechanically secured to the first atherectomy burr component.