Curbs for RC-Car (and Bike)

This is a curb system for my rc-cars and bikes. Works fine for the openRC F1!
There are in moment 7 parts, and all can clip to another, so you can build any track, you want!
All parts fits all other, you have many, many combinations, you can build curves, tracks, pit stops or something else.

Also is there an option, to change the filament on an height (I had done, mine was the last 5mm on another color, looks really nice, see the photos (sorry for the flipped rotation, thingiverse can't rot