Magura MDR-C eBike Disc Rotor - 180mm Center Lock w/ Lock Ring for Quick Release Axle Silver. The Magura MDR-C disc brake rotor is an ideal all-rounder for city trail and e-bikes. The improved lateral rigidity reduces vibrations and noise during braking and also has improved heat resistance and increased stability. Optimized for eBike usePrepared for tone wheel or magnetWear optimized ring design. Thickness = 2.0mm If your new rotors are a different size than the ones you&';re replacing, then you&';ll need new brake adapters! Check out our guide to getting the right brake adapters to spend less time on the computer and more on the trails. TECH SPECS Rotor Size (mm) 180 Hub/Disc Compatibility Center-Lock Disc Pad Compatibility All Pad Compounds Weight 190 Rotor Type One Piece