I test/exercise my ABS every week on my gravel driveway. Quite easy to lockup/activate the ABS on the rear wheel. Takes more nerve on the front but I do that also. It is interesting to see how much stopping force you really have on dirt. But, several times in the mountains on down hill curves the ABS has put my heart in my throat when it keeps going "whizz bang" and I am headed for the edge. I like the K bike and the ability to turn off the ABS as needed. And yes, you can get in trouble with the front wheel in ABS territory, ending up on the ground. Not completely fool proof. Don't ask, it was expensive.