A 9,000-RPM inline-four engine that makes 247 naturally aspirated horsepower out of just two liters of displacement? That's what the Honda S2000's powerplant does!

These days, the North American and Japanese versions of the S2000 gets the F22C1 engine, a stroker version of the F20C that trades 1,000 RPM off the redline for 11 foot-pounds of torque. Those are the only two variations of this engine Honda has ever made; it's not to be confused with the Accord/Prelude F engine, with which it shares only the bore spacing.
[Image source: Wikipedia]