Two-stroke? Forced induction? Compression-ignition-capable? That is many unexpected engine technologies combined into a single engine.

Explore the history of two-stroke engines, from early adopters to their decline due to emissions regulations and advancing four-stroke tech.

Two power strokes and two compression strokes per cycle. Generally, the biggest difference between a typical 4-stroke engine and the 6-stroke design is in the cam and valve timing.

Beta Motor announce updates to the RR Race range of two and four-stroke enduro models for 2026 including complete redesign of the 250 2T engine, new maps in the 4T models plus gearbox updates to the ...