Shimano RT-EM300 203mm Disc Rotor w/ Int + Ext Serration Lock Ring Insert and shockingly quiet amplification of

and shockingly quiet amplification of your efforts

Auto Hold to prevent rollback on slopes

Battery Capacity (mAh): 300

Cushioned EVA foam midsole for comfort and impact absorption

Shimano RT-EM300 203mm Disc Rotor w/ Int + Ext Serration Lock Ring Insert and shockingly quiet amplification ofShimano Steps Center Lock Disc Brake RotorShimanpo RT EM300 disc brake rotors for speed sensor systems provide exceptional stopping power in all riding conditions. Shimano's Center Lock mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design. Technical SpecificationsCenter Lock disc brake systemWide type disc brake rotorNot compatible with metal brake padRecommended Brake kit: MT520 MT500