Innertube valve stem clarification
Can anyone clarify the difference between tr87c and pv78 valve stems? I currently have the 90 degree angled stem (which I prefer), but don't ever remember choosing a model type. I'm about to replace my rear tire and tube, and have always bought the "angled" stem. I'm now noticing there are different models? I don't know how this has evaded me before. They both look identical on seller websites and there is no specific clarification regarding these two versions on line. Thanks.
2002 HD Dyna FXDX