This video shows an operational cutaway of a BMW S1000RR — a 193HP superbike — bumping against its 14,200RPM redline. A cam and valvetrain at 118 cycles per second is an amazing sight (and sound). (H/T to Chris!)
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m2m, apex detective
And this is what you get when you put this thing on spiked rubber. On a frozen lake.
Scary. Somehow attractive, too.