Optimized for E-Bike but excellent for other demanding applications, DH/Enduro for example Two piece design featuring Dovetail Interlink Technology, a patented interlocking of the outer and inner rings. Interlocking provides additional support when the outer ring expands due to heat Magura rotors utilize a 2.0mm thickness for optimum performance 6bolt rotors include: (1) 6-bolt/44mmBCD rotor with (6) T-25 rotor mounting bolts Not compatible with Center Lock adapters