Its a 2007 Factory Mod 600 sno pro....1 of 40 made in 2007. Twin pipes.....Used to run on 116 octane. Now runs on 93 pump gas. 146 HP. Ran my first race with it 2 weeks ago and took 3rd. Not bad for on the 2nd time on track. Chassie was built by Arctic Cat and Motor by Speedwerx. I bought it from a good friend of my brothers who races for Cat. This sled was only raced 5 times by him as he broke his tail bone that year and couldn't race anymore.