As if a 225-horsepower Polaris and a 240-hp Can-Am UTV weren’t enough, there’s now a boosted Kawasaki side-by-side making 250 ...

As was the case with the streetbike, Kawasaki utilized its in-house centrifugal-style blower that spins at 13.6 times the ...

Tom Stanton takes us through what a Stirling Engine is and how it can be used to power a bicycle; after two months of ...

Learn about the unique Stirling engine bike, a groundbreaking innovation in green transportation powered by air temperature ...

Say you have a Honda XR50, which is regarded as one of the most popular models of dirt bike worldwide, and you want to add a bit more power to this youth bike. Lifan produces a complete engine kit ...

But in 2025, thanks to the ever-growing culture of do-it-all bikes, we have some bikes that blend these aspects. Some are literally sports bike engines plonked into an ADV chassis.

BMW's 2025 R 18 Classic is an interesting proposition. There's a lot to love about the big Bavarian cruiser, along with some ...

I still think Honda failed upwards with its four-stroke project, because after about a decade, the oval piston engine went into one of the coolest bikes the company has ever released, the 1992 NR750.