The file 'Element Ultron Rear Fender Well 3D Printer Model' is (stl) file type, size is 39.7KB.
Not sure why they designed the Ultron without rear wheel wells but here is a nice set for you. And it fits with a large battery box. It also has a block for mounting to the frame.
there is only 1 file for both sides, mirror the part in your slicer to make the opposite side
the wide option fits wide aftermarket fenders and tucks in at the body so it fits better
fender_block-Body.stl | 11.2KB | |
ULTRON_FENDER_WELL-Body.stl | 105.1KB | |
WIDE_ULTRON_FENDER_WELL-Body.stl | 105.3KB |