the 250X was the last of the aircooled engines before going water cooled for the Z. It featured a full reed system as opposed to the case reed system that Suzuki had used for years, finishing on the T model. I was luck enough to come across a one owner example which hadn't been molested (but all the wear and tear items were worn out given the age), tidied it up and rode it in Viper for a few years, absolutely loved it. Some parts as previously stated are very hard to get, but with some patience and scouring the web most bits you can eventually find. From memory I had a machinist turn up spacers for the Full Floater rocker arm so I could use off the shelf roller bearings as the genuine units while still available were horribly expensive. When rebuilding the shock I found a late model Showa seal head fitted straight in, possibly from a CRF450R 2002-2008 ? Suzuki still had stocks of a lot of the parts for this model when I had mine (2010 when I "restored" it, a while ago now I realise).