Ship us your Puch or Tomos case, and we will professionally bore the sleeve to 52mm so that it will accept the 80cc Gilardoni, Parmakit, or Metra. This is much better than hacking at it with a dremel. Boring out the sleave area is the most labor intensive, and easily botched process when mounting up the Metrakit. Please be sure to completely break down your motor, and clean it.
After purchasing this service, please place your 2 case halves in a box, and ship it to: 1977 Mopeds213 E. Frank St. Kalamazoo, Mi 49007
