  We calculate the cross section for the production of pairs of scalar
leptoquarks (sleptoquarks) in a supersymmetric $E_6$ model, at hadron
colliders. We estimate higher order corrections by including $\pi^2$ terms
induced by soft-gluon corrections. Discovery bounds on the sleptoquark mass are
estimated at collider energies of 1.8, 2, and 4 TeV (Tevatron), and 16 TeV
(LHC).
