Rear-end structure: side members with specifically graduated material thicknesses

Mercedes-Benz CLS-Class / Overview / Rear-end structure: side members with specifically graduated material thicknesses

Multi-piece side members and a robust, flexible crossmember made from ultra-high-strength steel form the key components of the rear-end structure. The rear side members are continuous, closed box sections with carefully graduated material thicknesses. These are able to absorb high forces, thereby making a decisive contribution to occupant safety in the event of a rear impact. The bolt-on flexible crossmember is manufactured using a flexible rolling process which likewise allows the material thickness to be varied as required. Accordingly, the material thickness on the outside of the crossmember - where impact loads are highest - is greater than on the inside.

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