Oil Pressure Gauge
Having the ability to monitor your oil pressure is invaluable with these bikes. The idle should run around 900 RPMs. Lots of guys like to reduce that idle but that will create issues with oil flow. There is a risk of starving the top end of the engine when idling at low RPMs. The oil pressure gauge helps keep you in the know so that the top end doesn’t get starved of oil.
Here is a link to Rick’s website to get your own gauge.