Facts: - For Smallframe cylinders with 60mm bore (M1L, FALC, Pinasco, Quattrini, Parmakit...) - Central spark plug M14 long thread - Proven Omega combustion chamber for faster combustion and less knocking - For piston dome protrusion of 2.5 to 3mm (FALC piston, Overrev piston, Parmakit Vertex, Polini Rotax) - Combustion chamber 1.6mm deep in the head, meaning the squish band is completely in the head - piston protrusion ~ 0.5mm - 12.59ml @ 1.1mm squish gap results in 13.1:1 with 54mm stroke (13.6:1 with 56mm stroke / 14.0:1 with 58mm stroke / 14.5:1 with 60mm stroke) - Cylinder head outer contour = SF outer contour - Elongated holes for additional screw connections, so it fits common Smallframe cylinders with 8 screw connections - Countersinks for Allen screws with 12mm diameter, so washers can be used.
