Speedway Mini 4 (Pro) mudguard (ruima mini 4).
Openscad (v. > 2017 - nightly build ok)
The part can be splitted in two for printing purpose to avoid possible vertical drops. In this configuration, the two part need to be assembled: drilling, rod (carbon, fiberglass, headless nail), glue.
The openscad code is quick (and dirty) but it does the job. It is parametric... somehow. Dependencies between solids are not managed.
Fit test ok. not good print quality.