We've seen many engine configurations come and go, with some being more noteworthy than others and some being just outrageous. Honda attempted to modify the shapes of the pistons used in its engine, ...

The forgotten bike was a YZR500 GP replica with 88hp V4 engine. Overshadowed by the RG500 Gamma, only 10,000 were made by ...

How hard could it to be to build a two-stroke internal combustion engine (ICE) from scratch? This is a challenge that [Camden Bowen] gladly set for himself, while foregoing such obvious wastes of time ...

Traditional Two-Stroke Engine Issues A traditional two-stroke engine has the piston pushing down after firing, moving past an exhaust port and allowing the exhaust gases to leave the chamber.

What if the engine of the future wasn’t just a dream, but a reality? Imagine a power source that combines the raw, exhilarating performance of a two-stroke engine with innovative efficiency, ...

Detroit’s had its fair share of comebacks, but this one might just be the wildest one yet. Meet the REV Force: a two-stroke, twin-cylinder, supercharged, direct-injected, flex-fuel internal combustion ...

Unless you're really into dirt bikes, you probably haven't touched a two-stroke engine in decades — if you ever have. These mechanically simple motors combine the four strokes we all know and love ...

Almost every day for more than a year, Damon Sims would comment on whatever Kawasaki posted to its Facebook page, adding up the days since the Japanese manufacturer first teased its forthcoming ...

Kawasaki just did the unpredictable. Just when most of us thought the era of two strokes was over, the Japanese bikemaker has just released its first big two-stroker in more than two decades.

Gearheads and faithful Jalopnik readers already know the basics of an engine's bore and stroke, but for those that might be new here, let's dip our toes in the shallow end. An engine's bore refers to ...