2009 Kawasaki Vulcan 900, One thing that doesn’t come across in photos is the Vulcan 900s’ scale. Although most cruiser riders appreciate the manageability that comes with low seat heights and engines tuned for easily accessible torque, few want to look like they’re riding a bike built for newbies. Styling elements such as the broad, 5.3-gallon gas tank, fins that exaggerate the size of the cylinders and a 180-section rear tire make the Vulcan 900s look like larger motorcycles.