Harley-Davidson's Milwaukee-Eight engine has two spark plugs per cylinder. It's all about boosting performance, efficiency, ...

How does an engine more apt for a hot hatch perform in a 5,000-pound SUV? Well, about like you'd expect.

The Kawasaki Z2 750 essentially packs a downsized version of the famed, game-changing four-cylinder engine from the Kawasaki ...

Despite its critics and moves toward electrification, the internal combustion engine is not yet dead. Though its design for passenger vehicles may have begun to reach its apex with Mazda’s Skyactiv ...

The Better Half VW conversion produces approximately 30 horsepower at 3400 rpm with standard 92mm cylinders, though builders can increase power to 37 horsepower or more by using larger bore cylinders.

RealTruck.com reports on the latest truck accessories, featuring new products to enhance vehicle performance and style.

It’s 1999, and Ducati has won eight out of the last 12 Superbike World Championship (WSBK) riders’ titles. Over the preceding decade, their unique V-twin-powered machines proved to be a dominant force ...

The story of the most over-engineered Honda motorcycle ever made.

The Lotus Electre X hybrid will be launched later this year with a 200-mile e-range ...

You need lots of cubic inches for lots of power, right? Well, not really. Here are 10 cars with small engines that make big ...

Honda has a storied history in the motorcycle world stretching back nearly a century. In that time, there have been more than a couple under-performing duds.

Long after luxury brands quit the format, GMC quietly built a massive V-12 for trucks and heavy-duty work. Here’s how it happened.