Bike Sizing

I have a friend looking for his 1st MX bike. He is turning to me for advise on the best bike for him. He is 5.5 about 150-155 lbs. I guess. My CR 125 is a little big for him, but its still has the stock suspension & forks on it. I found a lowering kit for it, but I’m wondering if he would be off on a CR 85 big wheel? Or I can lower a 125 for him, if an 85 expert would be too small for him. I don’t want to steer him in the wrong direction….What size bike would be best for someone like him. Mostly just trail riding but doesn’t want to be limited, still want to ride tracks & maybe some racing.

THANKS ALL :cool:

Thanks...but?

Thank you for the tip. I really need some good answers to
this question. But, I don't see the form that You are talking
about, Can you clarify!

Thanks again :)