This recently happened to me, I had a very very light front impact.

Bent crash bar exacly the same.

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This is the weak point of the crash bar (as there is a large hole on the front of it), the peg on the back of the bumper will easily push onto the crash bar and bend it.
 
There will be loads of these on the go as when you fit a Forge FMIC you get a new one and theres loads of guys have these on here