Yes but while they were bending they were absorbing and dicipating the energy from the fall into themselves and not the mountings and frame.
A mate of mine dropped his Triumph Daytona at a roundabout on some diesel, fairly low speed slide and as he had R&G extended sliders sticking out from the fairing all should have been fine. However the nylon slider bobbins were mounted via long bolts that took the place of the standard top forward engine bolts. The result was that force of the fall or the slide transferred itself into the mounting point and snapped the mounting clean off the frame, the frame was alloy, so we ended up having to strip the bike right down to get the frame off to a specialist alloy welder to get it repaired.
The Moral of the story in this case was had he not fitted the sliders, the damage would only have been some superficial fairing damage which ended up damaged anyway.
Sometimes the parts that we fit to protect an item do need to be sacrificial in order to save something more important.
A mate of mine dropped his Triumph Daytona at a roundabout on some diesel, fairly low speed slide and as he had R&G extended sliders sticking out from the fairing all should have been fine. However the nylon slider bobbins were mounted via long bolts that took the place of the standard top forward engine bolts. The result was that force of the fall or the slide transferred itself into the mounting point and snapped the mounting clean off the frame, the frame was alloy, so we ended up having to strip the bike right down to get the frame off to a specialist alloy welder to get it repaired.
The Moral of the story in this case was had he not fitted the sliders, the damage would only have been some superficial fairing damage which ended up damaged anyway.
Sometimes the parts that we fit to protect an item do need to be sacrificial in order to save something more important.