

I’m new to bikes and I just bought this vintage Schwinn mesa runner, and I had an issue with my stem and wanna buy a new one. I need to know what stem diameter size to buy. I also wanna get flat bars for it. So if someone could send a link to a replacement stem and let me know what diameter handlebars I need to get to fit the stem. Again I’m new to bikes so this is all very confusing to me. I heard the bike is from the 80s if that helps at all. Thanks for all the help!
by KazoozleSk8s