-Central spark plug M14 long thread - Combustion chamber extends 1.0mm into the cylinder, meaning the squish band is completely within the cylinder. - 17.3ml @ 1.3mm squish band results in 12.5:1 with 56.5mm stroke / 12.8:1 with 58mm stroke / 13.23:1 with 60mm stroke - Cylinder head outer contour = M200 outer contour - Fits into common cylinder cowls for M200 (sits a bit lower) - Counterbores for Allen screws with 12mm diameter, allowing the use of washers - Screw length 6x25, thus 5mm shorter than standard - Omega combustion chamber for faster combustion - Additional bores at the cylinder mounting positions to allow removal of the cylinder and head or to retighten with a torque wrench.
