"These have no bearing in them"
(2) NOS Front drive shaft idler wheel for the 72 on up Polaris with the 37 cleat track, including TX Starfire, Charger Mustang, and Electra. May well fit many others. These are actual Polaris parts, part number 5430208. They are about 7" with a 1" ID. They will have dust and dirt and shelf wear, but are new old stock.
Again, these do not have a bearing, and will not work on the rear!