Perhaps you've checked this already, but your rim is used on the following Honda models if you're looking for a used or NOS rim (click on 'Select Model'):
http://www.powersedge.com/pages/OemPart ... -430-003/1I would stick with the stock Honda rim if possible. Believe it or not, the OEM rims on my MR and CR only fit in one direction (if I flip them around, all the spokes are about 1/16" too long), so the nipple hole angles and/or hub hole wear patterns can be critical. On the other hand, my CR's front wheel has an RM250 hub/spokes laced to a CR250M rim, so it is possible to get lucky with mixing and matching.
Ray