They were fast, loud, and smoky — then gone almost overnight.

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, ...

Anyone who appreciates simplicity of design and efficiency of operation has to like small two-stroke-cycle engines that power construction tools such as cut-off saws, rammers and breakers. Producing ...

The defining characteristic of a two-stroke engine is to fire (combust) every time the piston is at top dead center. This makes them highly power dense, but also notoriously makes two-stroke engines ...

Did you think two-stroke bikes were going away? Kawasaki is pleased to say that’s not the case. The green-and-black manufacturer just announced the KX327 and KX327X, its largest-displacement ...

Uniflow scavenging opposed-piston (USOP) engines are different from traditional two-stroke diesel engines; it has high thermal efficiency, high power density, and good balance 1,2, suitable for road ...

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, ...

If you're a fan of motocross or supercross racing, you probably know that Kawasaki makes a couple of two-stroke motocross bikes. Those models, such as the KX65 and KX85, feature 65cc and 85cc ...