Pinsir is one of the most versatile threats and is the hardest to defend against. Scarf isn't totally necessary since Pinsir wants as much power as possible to muscle its way through its checks, and base 85 is actually "fast" in NU. Basically Pinsir can be summarized thusly:
Pinsir@Item
Jolly / Mold Breaker
252 atk / 252 spe / 4 hp
X-Scissor
Close Combat
Earthquake
Swords Dance / Stealth Rock / Stone Edge
For SD, use Life Orb or Leftovers or Sash
For SR, use Sash and use it as a lead (it beats most other leads 1 on 1)
For Stone Edge, use Band or Scarf
In my opinion SD is the hardest to deal with since the defacto Bug/Fighting checks in NU (Weezing/Muk) get dominated by SD Mold Breaker Earthquake.
Pinsir@Item
Jolly / Mold Breaker
252 atk / 252 spe / 4 hp
X-Scissor
Close Combat
Earthquake
Swords Dance / Stealth Rock / Stone Edge
For SD, use Life Orb or Leftovers or Sash
For SR, use Sash and use it as a lead (it beats most other leads 1 on 1)
For Stone Edge, use Band or Scarf
In my opinion SD is the hardest to deal with since the defacto Bug/Fighting checks in NU (Weezing/Muk) get dominated by SD Mold Breaker Earthquake.