The thick material thickness means it can be easily machined for other racing cylinders from Polini, Parmakit, etc. or in conjunction with long-stroke shaft conversions. The material composition and workmanship are of the highest standard for a long service life and thermal stability. The cylinder cover must be modified for the spark plug hole. Always tighten cylinder head nuts crosswise in stages, preferably using a torque wrench with 1.8-max. 2.2 kgm.