Cylinder Head Insert blank d.50mm ep.2,0mm 2Fast 90cc Minarelli horizontal

Cylinder Head Combustion Chamber blank d.50mm ep.2,0mm 2Fast 90cc Minarelli horizontal. 2Fast cylinders are extremely powerful to begin with, and a well-done combustion chamber can make them even more powerful, so best of luck!

The spark plug thread is already there.

50mm version with 2mm clearance for Minarelli horizontal 90cc.