Shimano Steps RT-EM810 Disc Brake Rotor - 203mm Center Lock External Lockring Rear Only Magnet Bracket

Shimano RT-EM810 disc brake rotors for speed sensor systems deliver powerful and consistent brake performance in all riding conditions. The ICE TECHNOLOGIES FREEZA rotor significantly reduces heat build-up in the brake system to ensure consistent high performance braking even on the steepest downhill stretches.Recommended brake kit: Shimano M9120/M8120/M71201.5mm thicknessCenterlock mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design.High heat dissipation by radiator fin