Part 1: The rotary engine’s origin story and how Mazda became synonymous with the unique combustion engine. From the June 2010 issue of Modified magazine.

Learn more about what are motorcycle sprockets are and how they work from The Drive's Guides & Gear editors.

Motorcycle engines are exposed to the elements and naturally accrue grime. Here's a step-by-step guide on how to clean your bike's engine to get rid of it.

There's a special satisfaction one gets from digging deep into the innards of a machine, dismantling it, reassembling it, and eventually getting it running again ...