I can't believe that you asked where to get spares from Mark...
The plastics are sold as individual pieces - what are you after? I recall seeing some blue trials bits when we moved at the end of last year, but they're all in storage now. Let me know what you're after and I'll shoot over there and confirm stock.
All other parts that aren't plastic I should have here with me.
Rim strip for the rear wheel (to make it tubeless again) is R596.63 - in stock
The front wheel always has a tube in it though, and it just has the rubber strip to stop the spoke nipples from puncturing the tube. I have these in stock too at R112.54
I'll get back to you about the plastics soon Mark.