So, has he paid you for the bike? My youngest son has a 125cc bike, he can't ride it yet, he's only 16, it is registered in his name, he is the legal owner, I have insured it, fully comp, in my name, so that I can run it in, ready for when he turns 17 Insurance asked if I was the registered keeper, no They asked if I was the legal owner, no No issues with insurance