This flasher relay works in conjunction with our LED indicator kits to ensure older bikes (that use halogen bulbs from factory) don't suffer from "hyperflashing" (when the indicators flash too quickly). 

If you have a bike that uses stock halogen indicators, and you want to upgrade to one of our LED indicator kits, we'd definitely recommend that you add this relay to your order to ensure compatibility. 

Please note, only one relay is needed for a full set (i.e. 2x front and 2x rear) of indicators.