Even Harley-Davidson built snowmobiles during the 1970s. The two-stroke, two-cylinder Yamaha SL350 may have had its share of challenges, but it marked the beginning of a remarkable 57-year journey ...

This snowmobile's power came from a naturally aspirated four-stroke, four-cylinder engine. At 998 cc, the engine delivered the horses equally as well as an 800cc two-stroke could, and offered ...