This clutch came off a 1996 Ski Doo Formula SLS 500 liquid cooled snowmobile. It is a TRA 3 primary clutch and will work with other snowmobile models but you may need to change the spring, weights and ramps if you are using this clutch on a different model snowmobile. It is in good useable condition and the buttons look barely wore down. The snowmobile that this clutch came off of had just over 2900 miles so there was not much usage. The part number for this clutch is 417210100. Thank you for looking and have a great day!