1997 Ski Doo Formula 500. I've owned it for two years and has been a great fishing and riding sled. Always run 90 non ethanol and use klotz oil. I grease the entire chassis every season and it is always garage kept. I put a new 1 1/4' ripsaw track on it last winter. It has a heated seat and electric start. electric start works but doesn't turn it over very strong. Don't need to sell just want money to fix up my boat and bike.