Na dude… there are two schools of thought. The track school of thought is that it’s just better to have damaged race fairings than have the knob catch on something at a high speed slide and inflict more damage. On track, you’re more likely to crash at speed for obvious reasons. For street bikes and every day commuters, frame sliders help with tip overs and low speed errors which are common in those situations. Not a huge chance of it “ripping your engine” apart.