2014 Yamaha VIKING FI 4X4, The all-new Viking is ready to conquer whatever comes its way with our most powerful 686cc, liquid-cooled, fuel injected, SOHC power plant. This new engine delivers strong low-end acceleration and pulls hard through the rpm range to deliver excellent power delivery for getting the job done or when hitting the trails.The Viking features a large-capacity air intake system that improves overall engine performance. The air cleaner box is accessible from inside the cabin for improved serviceability.