Magura Gustav Pro MDR-S Disc Brake RotorThe GUSTAV PRO is the first disc brake ever to use 2. 5 mm thick rotors and makes every other brake look like a toy! Thanks to its mass the rotor heats up significantly slower stays in the sweet spot longer and thus offers consistent performance in every position. It also provides the smoothest vibration free and noiseless ride youve ever experienced. Without vibrations and noise. Thanks to an offset of the disc towards the center of the hub adjusting