Refinements enhance KTM’s motocross lineup for 2026. Both the SX two-stroke and SX-F four-stroke ranges see mostly minor ...

LUBRICATION SYSTEM Both parts in the crankcase are bathed in oil. Oil is supplied between the two rings at the bottom of the stroke from a small hole in the cylinder wall.

Every new internal combustion car and truck sold in America today is equipped with a four-stroke engine, as are the vast majority of motorcycles. Today, if you hear the loud, ringing song of a two ...

Jinhui Liang, Dongdong Zhang, Shuwen Wang, Vibration characteristic analysis of single-cylinder two-stroke engine and mounting system optimization design, Science Progress (1933-), Vol. 103, No. 3 ...

This news marks the return of Kawasaki’s two-stroke motorcycles, whose production ended nearly two decades ago. The last KX125 model was manufactured in 2006, while the KX250 left the market in ...

At one time, two-stroke dirt bikes dominated the motocross and supercross racing scene. That is until about 20 years ago, when the two-stroke engine disappeared from motocross above the youth levels.