Why did Yamaha choose to use 4-stroke engines in snowmobiles instead of developing cleaner 2-strokes?
A. There is far more to the 4-stroke story than exhaust emissions. The 4-stroke engine produces more torque than a 2-stroke within a wider power band. This ‘power-character’ added to the reliability and efficiency of the four-stroke has led Yamaha to develop world class, 4-stroke engines for sleds, bikes, outboards and personal watercraft.
