I saw one of their events the other day but didnt have time to check out what it was about so rode in another event. Looks like they use use category’s to represent the team and I’m not sure that the Category has any relationship to the w/kg???(edit: not likely a correct assumption - have no idea but keen to find out).
I had a quick nosey on FB and everyone seems to love what they are doing and loads of comments like “now this is racing”. I saw another post suggesting (posted a while ago while they were experimenting) that people sign up as D cat, ZP will disqualify them, but they will re-categorise later. Per @Gerrie_Delport, checkout the FB page they steer you to if you want to know more - dont believe its anything sinister and definitely not cheating as the conditions are buried in their FB link that you should visit to understand what you are signing up to.
I’m keen to find out more as I like tough and fair racing so thanks for highlighting this!