The socket is : T10/194/168/175/12961
You can get LED or conventional.
Recently, I bought HSUN T10 194 LED Bulbs Xenon White 6000K from Amazon (comes as two pack). Very bright . Adds night time visibility for your motorcycle.
Make sure your ignition is off when replacing the bulb. It is easy to short and blow out the fuse when you insert this bulb.
To install - pull the bulb holder straight out, pull the bulb out and push the new one in. Push the unit straight back in.