Sherco updated its 2025 line of 125, 250 and 300 ST-F Factory trials bikes. These updates include a new design/graphics, a ...

One of the lightest competition 125cc 2-stroke machines on the market, the 2007 MY YZ125 is a natural stage in becoming a champion, and an exceptional intermediate bike before taking on the big ...

Many factors can contribute to the potential top speed of a dirt bike. Dirt bikes are equipped with either 2-stroke engines or 4-stroke engines. If you ever spot a 2-stroke dirt bike, you would likely ...

The 1970s through early 2000s saw a steady stream of two-stroke motocross bikes. Then there was a slowdown when motorcycle manufacturers started focusing on four-stroke development, and some like ...

The 2012 124cc engine of the Yamaha YZ125 offers a staggering 33HP of high-torque fun, and makes the bike suitable for both generic off-road use and fast-paced dirt ... This 2-stroke bike sports ...

We've seen some mad Hayabusa custom bikes over the years, but this one's right out of the box. It ditches the original engine ...

We’re introduced to the traditional two-stroke diesel engine as thermally efficient but not smooth-running, and then the gas turbine as smooth but much more inefficient. The free piston engine ...

Ducati's newest V2 engine tips the scales at a featherweight 120 pounds, yet abandoning desmodromic valves raises questions ...