The five-dimensional Bulk Randall-Sundrum model, where all Standard Model particles except the Higgs are free to propagate in the bulk, predicts the existence of Kaluza-Klein (KK) modes of the gluon with a large branching into top-antitop pairs. This scenario has very interesting collider implications. While some of the studies have focussed on graviton production, the interesting signal for this
scenario is the production of KK gauge bosons and, for the LHC in
particular, the production of KK gluons. I will discuss first the
production of the lowest KK gluon mode at the Tevatron energy, and then the production of KK gluons in association with a ttbar pair at the LHC.