I mean, there can only be so many different types of engines out there, from single-cylinder mills to the ubiquitous parallel and V-twin motors ... the mass of the rear piston.

Not just any 2.0-liter unit ... "Imagine a Harley with one more cylinder. That kind of sensation." While the Harley V-Twin is a high-compression, low-revving engine suited for long, cozy freeway ...