  We investigate the ability of LEP2 to detect possible $R$-parity violation,
especially for the case where direct production cross-sections are too small
for all superparticles. We demonstrate that for coupling strengths allowed by
present experiments, sfermion-exchange diagrams can contribute significantly to
the $e^+ e^- \rightarrow f \bar{f} $ process. This would be a useful tool in
further constraining the parameter space. Similar arguments hold for
leptoquarks and dileptons as well.
