Unless things have changed recently they are a waste of money. Due to the relationship of bulb filament and reflector design putting somthing other than a true H4 bulb in the housing results in poor light output.
Apparently they're H4 so 'should' do the same job, I.e. Be at the correct focal point between the lens and reflector for main beam and high beam. The reviews of purchasers supposedly say they're an improvement. Just wonder about fitting etc.
"I have the LED headlights in my 2011 Roadster but
you would have to cut and extend the wires from the driver to the LED. The
reason being is there is no room in the front of the bike for the driver
unit and the hole in the back of the headlight is too small for the H4 H/L
plug from the driver to fit through. The driver will need to be extended
about 30cm and will fit nicely under the tank."