Some time ago, Triumph was out to copy one of the jap4 engines. So they put all 4 on the dyno and ran them near redline, untill peak power dropped below 90%.
The winner btw was kawasaki... but thats not the point.
The looser, the R6 dropped in 55hrs. I believe the winner was about 3 times that.
While 150 hours is indeed days, it wont take that long to accumulate if you are constantly keeping it at 8+krpm. Learn to shift.