Well if you're running Iron Fist,
Infernape @ Life Orb
Ability: Iron Fist
EVs: 252 Atk / 4 HP / 252 Spe
- Fire Punch
- Close Combat
- Mach Punch
- Thunder Punch
Close Combat is mandatory, as it is Infernape's strongest Fighting STAB move and allows it to hit Pokemon that are hit neutrally for some solid damage.
Mach Punch is extremely useful for revenge killing threats such as +1 Mega Gyarados, +1 Mega Tyranitar and Bisharp, as well as letting Infernape avoid a potential Speed tie with Terrakion and other base 108 Speed Pokemon.
Thunder Punch lets Infernape handle many otherwise hard checks on the switch-in, such as Talonflame, Azumarill, Gyarados, and Mega Charizard Y.
Fire Punch weaker than Flare Blitz, but it allows Infernape to stick around for longer due to lack of recoil, and is also boosted by Iron Fist
Nature and EV spread:
Max Attack and Speed for outspeeding and landing a heavy hit on many Pokémon. Really not much else to say.