It’s a Claud Butler Racing - Supermoto first pic is the swing arm
The second/third pics are from my donor bike, the swing arm is exactly the same
Second pic is an Allen bolt that comes out
Third pic is the problem I am stumped here, I don’t know the size of the Allen key needed 14mm maybe? Or if any, what to do next. I have tried to tap it out but it seems to be tight in!