Don't forget that Lucario learns Agility as an Egg move, so it's possible to compensate for his average speed and put everything into atk and spatk. With 4 Speed EV's and a neutral nature Lucario hits 217 speed, double that for 434 which is pretty good.Here's the set I use:
Lucario @ Expert Belt
252 Atk/252 SpAtk/4 Speed
Rash Nature
Close Combat
HP Ice
Dark Pulse
Agility
You could run Psychic if you want( Heracross, Weezing, Tentacruel, Machamp), but Hp Ice and Dark Pulse cover more common Lucario switch-ins IMO.
Lucario @ Expert Belt
252 Atk/252 SpAtk/4 Speed
Rash Nature
Close Combat
HP Ice
Dark Pulse
Agility
You could run Psychic if you want( Heracross, Weezing, Tentacruel, Machamp), but Hp Ice and Dark Pulse cover more common Lucario switch-ins IMO.