I am not sure exact year could be 1957 is what sticks in my mind. Harley started using the same exact steering head bearings and steering stems in all models. Up until 2013. 2014 everything changes some better some changes not. Races are replaceable and all models have tapered Timken roller bearings. Races and bearings come packed together and replcement bearings and races is standard procedure when replacing them. Resolving wobbles and weaves are typically pretty straight forward. There are those bikes at times not so easy