Genuine Mikuni Flatslide Carburetor Vm28-418 28 MM Bultaco Alpina Sherpa 250 200

  
This is NOT a cheap Chinese knockoff! This is the real deal and one of the well known upgrades for Bultaco 175, 200 and 250 two strokes. It's also the one to use for other bikes of that era, but I'm not familiar with those specifically - MAICO, OSSA, PENTON, etc.