I really wanted to do a check from on the VR but this is probably one of the hardest counters you can get so I've hit "fuck it"
Poliwrath @ Rocky Helmet / Leftovers
Ability: Water Absorb
EVs: 248 HP / 252 Def / 8 Spe
Relaxed Nature
- Scald
- Circle Throw
- Rest
- Sleep Talk
Poliwrath is not only immune to Crabhammer and Aqua Jet thanks to Water Absorb, but with the combination of its high physical bulk and Fighting typing it also takes jack all from KOff/Crunch. Circle Throw only deals around 50% to Crawdaunt, but on the flipside it means that their switching is all messed around with if they choose to evade the damage.
252 Atk Choice Band Adaptability Crawdaunt Knock Off (97.5 BP) vs. 252 HP / 252+ Def Poliwrath: 112-132 (29.1 - 34.3%) -- 4.3% chance to 3HKO
252 Atk Choice Band Adaptability Crawdaunt Crunch vs. 252 HP / 252+ Def Poliwrath: 92-109 (23.9 - 28.3%) -- 96% chance to 4HKO