A countermeasure assembly for an automotive vehicle includes a front side rail extending in a generally longitudinal direction; a bumper having a main bumper member and a bumper extension forming an end portion of the bumper; and a pivot link having front and rear mounting portions. The front mounting portion is pivotably engaged with the bumper extension member to define a front pivot joint, and the rear mounting portion is pivotably engaged with the front side rail to define a rear pivot joint. The rear pivot joint is located rearward and inward from the front pivot joint. The bumper extension is bolted to the forward end of the front side rail. The bumper extension has a front member and a rear member, of which the rear member is bolted to the front side rail. The front member and the rear member of the bumper extension define a hollow box structure.
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