  In the stabilised Randall-Sundrum brane world scenario, the radion can have
phenomenologically testable effects, which can be measured against precisely
measured electroweak physics data. We investigate the effect of two loop radion
corrections to $K_L$ - $K_S$ mass difference to set a bound on the radion mass
and vacuum expectation value. It is found that the leading two loop corrections
are of the order $[Log(\frac{\Lambda^2}{m_\phi^2}) ]^2$ where $\Lambda$ is the
cut-off scale ${\cal O}(\sim$TeV) and $m_\phi$ is the radion mass.
