This reminds me of the I believe early working predecessor to the Honda CBX, a 125cc six cylinder 4 stroke reported to have been run on the dyno at 25,000 RPM for 24 hrs.

It convinced the exec's and they greenlit the project and as stated above the rest is history.

Also segue's a bit to the earlier first? Kawasaki KZ 900 in the states that was run literally WFO for 24 hrs at Daytona, wore out several riders, chains and tires logging 2631 mi. with an average speed of 109.64.

It supposedly ran out of fuel at one point but was carrying enough speed to get back to the pit to refuel instead of botching the test.

There were no other failures.

And Yvon DuHamel rode a Yoshimura tuned one to a one lap record of 160.288.

https://en.wikipedia.org/wiki/Kawasaki_Z1