A shoe outsole comprising a substantially flat body with a top face and a lower face exhibiting a distribution of tread protrusions. The protrusions include at least one peripheral protrusion extending beyond the peripheral edge and defining a top abutment surface displaced generally downward relative to the top face of the body. In a method of assembling the outsole to a shoe upper, for each peripheral protrusion, a cut is formed in the upper, developing in accordance with the profile of the area of superimposition between the peripheral protrusion and the body's lower face. The method provides for insertion of the at least one peripheral protrusion into the appropriate cut so as to enable passage of the protrusion below the upper as a superimposition reversal between the upper and the body.