From Engineering Explained.

The V4 Is The King of Sport Bike Engines – How Does Ducati Do It?
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Ducati’s V4 engine used in the Panigale V4 R is a masterpiece of engineering. It’s one of the highest power-per-liter naturally-aspirated engines in any form of street going vehicles, and significantly higher in power-per-liter than any street legal naturally-aspirated production car. What makes Ducati’s V4 engine so special? We’ll discuss the highlights in this video, including:
1) How does the Ducati V4 compare to the most powerful NA car engine?
2) Why does Ducati use a V4, instead of a V2 or I4 engine layout?
3) Why does Ducati use a counter-rotating crankshaft, unlike everyone else?
4) How does Ducati’s Desmodromic valve system work, a springless valve train?

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EE Extra: https://www.youtube.com/channel/UCsrY4q8xGPJQbQ8HPQZn6iA