Snowmobiling blues...

Never been on or around a snowmobile. Wouldn't get to use one much here in Oklahoma! MAYBE once a year if I'm lucky.

Are all of the newer ones 4 stroke? Is 4 stroke preferred over 2 stroke? I LOVE 2 stroke 4 wheelers and currently have a Yamaha Banshee with CPI pipes, the sound and sudden power delivery is so addicting. I would like to make a trip somewhere and go ride a snowmobile for a few days.