Shimano RT-EM300 Centerlock Brake Disc

ERTEM300 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 tracks in steel, this construction allowing to dissipate the heat by the intermediary of fins in the center. Details: E-Bike compatible Compatible with resin pads Centerlock nut Weight: 203mm (150g) Reference: ERTEM300