  It has been known for some time that the inclusion of brane fluctuations,
namely branons, helps in the suppression of KK-mode couplings to brane
localised matter fields. In this paper we study the constraint on brane tension
and compactification scale for such models using the results from the direct
search of $W'$ at 13 TeV LHC, with an integrated luminosity of $36.1 fb^{-1}$,
in the case for which branon forms the entire cold dark matter. Unlike the
rigid brane scenario, where the compactification scale gets constrained to
$\frac{1}{R} \gtrsim 5.2$ TeV, here we show that compactification scales as
small as $\sim 1$ TeV are allowed for brane tensions of similar strength.
