My current frame ( Savage Raptor ) is made for 100mm forks but I’m running Zocchi 55’s @ 145, been like it for a year without problems..Welsh trails & trail-centers, road, bridalways etc. And I’m a slim 200lbs.. 😆
I wouldn’t say that it’s ok with every frame though. I paid £30 new for the frame so wasn’t a big concern.