My rear shock bushings on my 1999 Polaris Sportsman 500 deteriorated and only the steel sleeve was left. I tried going to Polaris but they don't sell just the bushing, only the entire shock at $140 each. I know the bushings are available on ebay for both the Trail Boss (rear mono-shock) and the Sportsman (dual rear shocks). You should be able to search for them by typing "Polaris ATV Shock Bushings" in the ebay search tool. They work great.