  We study the phenomenology of a supersymmetric bulk in the scenario of large
extra dimensions. The virtual exchange of gravitino KK states in selectron pair
production in polarized \epem collisions is examined. The leading order
operator for this exchange is dimension six, in contrast to that of graviton KK
exchange which induces a dimension eight operator at lowest order. Some
kinematic distributions for selectron production are presented. These processes
yield an enormous sensitivity to the fundamental higher dimensional Planck
scale.
