Spacer for Mudflap RPM Rear Bumper for traxxas Slash 4x4 or 2wd

These spacers that I have designed for my Traxxas Slash 4x4 for the purpose of Providing
some spacing between the RPM rear bumper and the RPM mud flaps. The reason that I have design these spacers is because my Traxxas Slash 4x4 will not pop wheelies for some
reason since my slash 4x4 will not pop wheelies there is no need for the low visibility
wheelie bar to be there. so that upgrade has been removed and then replace with these
3D Printed spacers to fill in the gap where the low visibil