Heavy, solid alunimum construction. Slightly heavier than smolik head! Aircraft grade aluminum.
 
Redesigned combustion chamber for minarelli cylinders specially. Fits better and has higher performance than using heads made for standard cylinders. This cylinder head fits the minarelli cylinder wonderfully. Gone are the days of mickey mousing a cnc head made for stock china cylinders to fit. This is what you need. Fits Wildcat ultra minarelli engine and others.