MAGURA DISC ROTOR MDR-P 180 CL SL/BKThe MDR P is a brake disc for performance oriented riders and tough tasks from downhill and e bikes to heavy cargo bikes Two piece disc saves weight and for the first time it is also available with a 220 mm diameter Patented interlocking of the outer and inner rings (Dovetail Interlink technology) provides additional support for the inner ring if the outer ring expands due to heat Two piece design for best heat dissipation and high torque transfer