Vintage riders know just how far snowmobiling has come with front suspension comfort and how it affects handling and safety. Snowmobiles from the leaf spring era, which was pretty much from the beginning right up to the 2011 Yamaha Bravo, relied on a variety of front suspension technologies that really didn't change much over the decades. When Polaris first adopted the trailing arm independent front suspension (IFS) for what would become the most popular line of sleds in snowmobile history, the leaf spring remained relevant in every snowmobile line of the period. Where the leaf spring design had become a staple, alternative suspension concepts were unsettled.
More: Evolution of Snowmobile Front Suspensions