Shimano RT-EM910 Ice Tech Freeza Centerlock Brake Disc (Outer Nut) with Magnet for E-Bike STEPS

ICE TECHNOLOGIES FREEZA brake discs are designed to maximize brake cooling, resulting in consistent braking and increased pad life. The rotor is designed in 3 layers, thus a central structure in aluminum and external steel tracks, this construction allowing to dissipate the heat by means of fins in the center. Details: E-Bike STEPS compatible (rear disc position) Ice Tech Freeza technology. Centerlock nut (outer spline) Weight: 160 mm (113 g), 180? Mm (144? G) and 203? Mm (116? G) Reference: IRTEM910