EM3ev Disc Spacer
EM3ev Disc Spacers are 2.5mm thick to increase disk caliper clearance on hub motors with insufficient clearance for your brake calipers.
Please note that there may still be some clearance issue between disc and caliper mounting brackets when these are used, as the disc will no longer be in the standard location, instead it will be 2.5mm closer to the dropout on the disc side. These details can often only be determined when you attempt the installation. Adding an EM3ev Disc Spacer on the axle may also be necessary, or modify the caliper mounting brackets.