Try this
http://bikersimage.comThey used to make custom wheels for our Valks, here's what I copied and saved from an older post on rims.
Look under the METRIC cruisers section. I have the Duce 5. I had to call them because they dont list the Valk. I asked for a 23" front but they could only make a 21". It was 1000 dollars but they were the only place I could find that would make wheels for the Valk. I looked for a year and called everyone. I would pay the money again, it makes a big diffrenence. The tire size is 120/70-21. Also you need to ask for a 21x3.5 not the 21x2.15 or it wont look right.
Regards
Lyle...