If you want to know what kind of bike engine fits your needs, you need to know how a two-stroke differs from a four-stroke. Each of them has advantages and disadvantages. But you can't, or shouldn't, ...

Editor’s Note: This article previously appeared in a different format as part of The Atlantic’s Notes section, retired in 2021. In response to the item immediately below, which kicked off this Thread, ...

Two-strokes are far simpler machines than four-stroke engines. They’re also lighter, easier to work on, and downright angrier, pumping out a lot more power per cubic centimeter of displacement, which ...

Proving there is still life in the two-stroke engine is new British company, Langen Motorcycles. They will unveil a limited-edition, bespoke model, eponymously titled the Two Stroke, at the Salon ...

A Sydney engineering company has developed a new two-stroke engine that they believe could be used in motorcycles. It’s called Crankcase Independent Two-Stroke (CITS) and was invented by former South ...

Conventional wisdom suggests that our faithful internal combustion (IC) engines are heading the way of the buggy whip. The lithium-ion battery has arrived, emissions standards are tightening, and ...

I tear down my 2021 YZ125 to the bare frame and rebuild it exactly how I’ve always wanted. In this start to finish video, I ...

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 ...

After blowing up my KX250 two-stroke a year ago, I finally gathered all the parts and got to work on a full rebuild. In this ...

Reportedly parked for over five decades, this 1961 Saab 95 is pretty much a rust bucket. But it's not going to the crusher ...