u/NefariousnessSafe473

Bought a second hand Atomix 50cx motorbike for my son in poor condition. It’s meant to be a clone of the PW50 bikes, so bought the front forks online. Just wondering if I can get something to fill this gap here to that I can tighten the head stem, like a spacer? Or just go and hunt the correct front forks?

Thanks in advance.