I installed Oggy Knob frame sliders over winter. I was little hesitant, based on some post I have seen here that questioned whether the bracket would hold up. I can attest in my case, the frame sliders did the job in a ~55 MHP low side while on the track.
I had been wondering what would be damaged in a low side with frame sliders. Here's the inventory to repair. Seems pretty minimal damage, compared to what could have would have happened without a slider, in a relatively high speed low sidewith out the slider.
Scratched only lower fairing with no cracks
Clutch cover scratched
Rear brake scratched
Foot peg scratched
Passenger foot peg and bracket scratched.
I was able to drive the bike off the track.
The bracket that holds the plasctic slider is very very heavy duty. It did not bend at all. I would bet the bolt would snap, before that bracket bends.
It was hassle to find the Oggy Knobs, and I ended up having to purchase them directly from Oggy Knobs in Australia. Damb glad a I did. No cutting the fairing like other frame slider solutions. The knobs were $249 AUD (which is ~$240 USD right now), plus shipping that was ~$35 USD (I got him discount the shipping).