Two-stroke engines used to be ubiquitous in dirt bike racing, thanks to their lightweight construction and horsepower. Packed in a dirt bike frame, they make a motorcycle playful in the corners and ...

Two-stroke engines have their uses, but they are seen as environmentally unfriendly today. But why do they have that reputation, and is it deserved?

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 ...

A quick look around is all you need to think the two-stroke engine is dead. Exhaust smokers no longer brapp their way past outdoor cafés or over twisty mountain passes. You don't even see two-strokes ...

The two-stroke may be getting a second life. Motorcycle maker KTM has developed a two-stroke engine with fuel injection that it’s launching in new enduro models this year, marking the first major use ...

Husqvarna has just unveiled two new enduro bikes with fuel-injected two-stroke engines for the 2018 model year. This news comes very shortly after KTM announced their new fuel-injected two-stroke ...

Have you ever wondered why you need to add oil to your chainsaw’s fuel supply? Or why some dirt bikes have a higher pitched exhaust note than others? We’ve all been burdened with yard work or been ...

EcoMotors International, a startup based in Troy, Michigan, has a new approach to an old idea–the two-stroke engine–which it says is up to 50 percent more efficient than most vehicle engines and ...

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, ...

My car ran out of petrol (faulty gauge) and the only spare fuel I had in the boot was a 1:50 premix for my boat’s two-stroke outboard engine. Could I have used that to get me to the next station?