Hello, You are looking at an 8200 series Ryde FX #8241 ski shock that came with an 03 ZL 600 ESR SS snowmobile. This shock is not off the 03 ZL 600 and I am not sure what it is off of originally. It is in good used condition. Shaft and bushings look good. From center of eye to center of eye it measures 17″. Do not know if it will need to be rebuilt/recharged or not. Come as pictured. Pics show condition well. Could fit several years and models, but please do your own checking to make sure they will fit your application. If you have any questions please feel free to ask. Thank you!