This sled was a mid-season model release in the 95-96 winter season. It showcased a number of things that had not been used before on the ZR 580 models...Quick-adjust driven clutch, Arctco 9 post drive clutch, tipped-up Extended Travel Tunnel and rear suspension, Quick-adjust front arm adjuster, remote reservoir ski shocks, bright Arctic Green hood color, sno cross style handlebars, race-style seat with tunnel pads, and more. It differs greatly, in large and small ways, from the very popular 1997 ZR 580 model which was released just a few months later. This unit has 3679 miles on it and is in very good original condition. It is believed that 502 of these were produced and this one was the final one off the line. Serial number 9661932, engine number B58-409318. This very snowmobile is pictured on pages 106 and 107 of the book 50 Years of the Cat, authored by John Sandberg.