The cheep plastic valve stem caps have always bugged me; really, our wheels are much too cool to have to put up with them. I was pleasently supprised to find these caps at the local Wal-Mart, in the auto section with the tire pressure gauges. At $2.47 for a pack of four they have got to be the least expensive mod worth doing. Parts are made by Victor - "Aluminum Sport Caps - Silver" #V726S. I tried to up load an image of the caps VStem.jpg, but something is not quite right. Anyway the caps look like a bullit with a knurled ring.