This invention relates to replaceable wear resistant components for rotary impact crushers and more particularly to the wear resistant assemblies at the outlets from the crusher rotor the outlet trailing edge main wear tip comprises a backing plate having secured to its forward end a wear resistant assembly forming a step which will be inwardly directed in use with respect to the rotor outlet the step being sufficient to cause a build up behind the step of material being crushed to form a protective lining against the inner wall of the rotor.
