i use a Acerbis X LED tail light
https://www.rockymountainatvmc.com/p/11 ... Tail-LightI am pretty sure it is brighter than stock when running but a lot brighter when braking... a lot more noticeable. also has a white led w/ clear lens for license plate built in.
it won't plug and play but the stock beta connector is junk anyway.
I used these type of connectors:
https://www.amazon.com/Waterproof-Elect ... ctor&psc=1you can also buy a generic LED taillight(light unit itself, no plastic/fender mount) and splice into the system/existing taillight wires for added lighting.
I have one of these for when I take off my street legal stuff but still want riders behind me to know I am braking or to signal them: I have it wired to only function when braking(no running light). This one is not that bright but you can google and find brighter/bigger.
https://www.amazon.com/NBWDY-Motorcycle ... ycle&psc=1I have some notes on wiring the x light if needed.