Please note this a Front Rotor upgrade and will only fit the Front Wheel.  

Engineered with Ebikes in mind, the floating MDR rotor from Magura has been optimized with a thicker design for ultimate stopping power.  With a "floating" rotor design, the Magura MDR is ideal for much needed heat dissipation and stopping power even under heavy loads. 203 mm makes it plug and play with your existing front wheel bolt pattern.  

Plug and play with the Sur-Ron X.