The Beta motorcycle brand expanded into professional Motocross racing in 2021, joining the MXGP series. The company expanded ...

Almost all gasoline engines, whether they're efficient-yet-less-refined four-cylinders, high-horsepower V6s, or growly and torque-rich V8s, use much the same process to create power. The "Otto cycle" ...

Porsche was issued a patent for its six-stroke combustion engine on October 22, 2024. The company describes the new engine as having a "working cycle" of three complete crankshaft revolutions with two ...

Finnish manufacturer Wärtsilä introduced an engine back in 2015 that was so good, it snagged a Guinness World Records title for being the most efficient four-stroke diesel engine shortly after its ...

There are three 230cc four-stroke trail bikes in production for the 2026 model year. When including used models, there’s one more, which saw its last year on the market in 2019. This quartet of 230cc ...