By the 1960s, the two-stroke engine powered superbikes in the GP World Championship. ... In other words, two-stroke 125cc bikes would have to race 250cc four-strokes, ...

The culmination of their work was the 1966 RC166 motorcycle, which used a 250cc twin-cylinder engine that produced 280 horsepower per liter and revved up to 20,000 rpm, one of the highest-revving ...

A two-stroke engine has a combustion cycle with each crankshaft revolution, ... Drag Race: A 2-Stroke 250cc Sports Bike Troubles A 500-HP Toyota Supra. Two-stroke Aprilia RS250 '90s sports bike.

KTM’s two-stroke patent. The system also dispenses with pre-mixing oil and fuel. KTM will make 250cc and 300cc versions as early as May. Meanwhile, German company Ronax and Switzerland ‘s Suter Racing ...

The Aprilia RS250's 250cc two-stroke motor produces in excess of 60 brake horses, giving it a specific output of 240 bhp per litre - more than the fastest MotoGP bikes and on a par with F1 engines.

Proving there is still life in the two-stroke engine is new British company, Langen Motorcycles. They will unveil a limited-edition, bespoke model, eponymously titled the Two Stroke, at the Salon ...

It's evident that 450cc four-stroke dirt bikes are faster than 250cc two-strokes. If the 450 wasn't faster, professional motocross and supercross riders would be racing 250cc two-strokes.

Motorcycle maker KTM has developed a two-stroke engine with fuel injection that it’s launching in new enduro models this year, ... The engine will be available in 250cc and 300cc versions, ...

The two-stroke era gave us motorcycles with the wildest power-to-weight ratios.It is because of this feat that, even today, many of these raspy-sounding smokers can outgun powerful four-cylinder bikes ...