72cc power for Puch based mopeds like the Maxi, Newport, Cobra with E50 engines. Also will work on the ZA50 Magnum / Cobra when used with a flat flange exhaust like the maxi.
The largest bore you can fit without case grinding. So you will need to mill the head or use extra base gaskets to get the correct piston clearance.
Airsal Part # 01031446