Anyone know of an aftermarket 12 volt "Neutral Open" Relay
that will work on a Valkyrie for the hi beam switch

Most all relays have a dual use in that they can be used to disconnect or make a connection.
There are at least two families of relays: Momentary and latching.
Valkyries don't have headlight relays as stock.
You must be contemplating adding additional lighting controlled with a relay. That's the correct way to do it.
If you want to use the stock toggle on the handlebars and use it in conjunction with the high beams only you should probably investigate whether the wiring can carry the additional load of a relay in the high beam circuit.
A possible solution could be move the high beam wire to the relay also and then stock high beam wire could be dedicated to the relay singularly.
In any case, you will need a new supply wire directed to the relay for your power needs.
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