[SET] - Recommended.
name: Bulk Up
move 1: Bulk Up
move 2: Drain Punch
move 3: Mach Punch
move 4: Payback / Stone Edge
item: Leftovers
ability: Guts
nature: Brave / Adamant
evs: 120 HP / 252 Atk / 136 SpD
ivs: 0 Spe
[SET]
name: Substitute + Focus Punch
move 1: Substitute
move 2: Focus Punch
move 3: Mach Punch
move 4: Payback / Stone Edge
item: Leftovers
ability: Guts
nature: Adamant
evs: 252 HP / 252 Atk / 4 Spe
[SET]
name: Choice Band
move 1: Hammer Arm / Superpower
move 2: Mach Punch
move 3: Stone Edge
move 4: Payback
item: Choice Band
ability: Guts
nature: Adamant
evs: 252 HP / 252 Atk / 4 Spe
[Other Options]
Offensively, Conkeldurr has a fair number of other options it can use. Low Kick is an option for heavier foes, as it hits Pokemon like Snorlax harder than Hammer Arm. However, lighter threats such as Jirachi can easily take a Low Kick and set up on the switch or simply attack. If you want Conkeldurr to provide its own paralysis support, Force Palm is an option, as the 30% paralysis rate allows Conkeldurr to cripple faster threats. However, Force Palm is illegal with Mach Punch, and the utility of a STAB priority move coming off base 140 attack is too much for Conkeldurr to give up for a paralysis chance of only 30%.</p>
<p>Though Guts is generally the superior option in terms of ability, Conkeldurr can run a Sheer Force + LO set consisting of moves which benefit from the ability. However, the only decent moves that Conkeldurr can run along with Sheer Force are Force Palm, Poison Jab, and Rock Slide, all of which are not too powerful even after the boost, with Force Palm only reaching 78 BP before STAB. Sheer Force also means that Scald and Will-O-Wisp ruin you completely, something that is not a problem when running Guts.</p>
<p>Conkeldurr can also run a set that revolves entirely around Guts by using either a Flame or Toxic Orb. This allows it to take advantage of the Guts boost without fail, instead of relying on the opponent to status it. However, this means Conkeldurr will not receive HP recovery (no Leftovers), and must run Drain Punch to recover off any damage acquired from status or rely heavily on Wish support.