I have here a brand-new in the box metrakit for derbi. It's a 80, reed-valve for a piston-port motor. I was gonna put it on a puch but I don't feel like it. It comes with all gaskets and seals, MK reeds, (gila-size intake) piston & rings, no head though.
The only thing is, the exhaust port is kinda funny, (see pic) It's like for a scooter exhaust or something.
BOOM! make an offer.