Intake valve pit bike head diameter 24mm, 66.00mm long, 4.96mm tail

dirt bike engine assignement :
 
YX 50-139FMF
YX 88-147FMF
YX125-153FMI
LIFAN 88-1P47FMF
APOLLO/CRZ/SMALL MX 125-1P54FMI (2009...)
JIALING 125-JH156FMI
LONCIN LC152FMI
FYM : FY152FMI
UPOWER 125-153FMI YCF 125-153FMI
TZH157FMI (for horizontal cylinder engine)
TOKAWA MX110-TK152FMI