With a much higher state of tune, a motorcycle engine lives a more stressful life ... oil passages flow more efficiently, ...

We all know how a conventional internal combustion engine works, with a piston and a crankshaft. But that’s by no means the only way to make an engine, and one of the slightly more unusual ...

The KLX230SM is powered by a 233cc SOHC air-cooled single engine that is calibrated to provide plenty of torque. The bike ...