Disclosed herein are overmolded polyamide composites structures and processes for their preparation. The disclosed overmolded composite structures comprise i) a first component having a surface, at least a portion of which is made of a surface resin composition, selected from polyamide compositions comprising a blend of two or more fully aliphatic polyamides having a melting point of at least 250° C., and comprising a fibrous material being impregnated with a matrix resin composition, ii) a second component comprising an overmolding resin composition, adhered to said first component over at least a portion of the surface of said first component, and wherein the matrix resin composition is selected from polyamide compositions comprising a one or more fully aliphatic polyamides having a melting point of at least 250° C.