Magura Disc Rotor Sensor Magnet Description: The Magura Disc Rotor Sensor Magnet adapts various Magura disc rotors so they can be used in conjunction with the sensors found on many E-Bikes. This kit includes the sensor magnet and the necessary hardware to attach the sensor securely onto the rotor. Note: This sensor magnet is NOT compatible with Magura MDR-C Centerlock Rotors. Features: Adapts various Magura disc rotors to work with E-Bike sensors Includes a disc rotor mounted magnet, O-Ring, and mounting clip to attach the magnet to the rotor Compatible with: Magura Storm HC rotors (180mm Only!) Magura MDR-C Rotors Magura MDR-P Rotors