The valve stem seals,  exhaust gasket and spy are to be ordered separately .
Engine bore 52.4mm with a spacing of studs engine corresponding to 138/140
not suitable for engines 107 and 125-1P52FMI-K with a spacing of cylinder studs CRF50 .
Take the head and base gaskets from 107 to 125 Lifan 1P52FMI-K