  We study the signature of dilepton and a hard jet ($\ell^+\ell^-j$) via heavy
new gauge boson production in split universal extra dimension scenario where
the Kaluza-Klein parity is conserved but the Kaluza-Klein number is not. A hard
cut to the jet energy effectively removes virtually all possible backgrounds
and provides a handle to search of new physics involving new neutral heavy
states as the Kaluza-Klein $Z$ boson. The signature can be more generically
used in search of other new states such as graviton and radion in warped extra
dimension models.
