For the dirt bike engine with a needle bearing on the right side of the countershaft stating from 2010
 
52mm bore bearing crankshaft
YX 125-153FMI starting from 2010
YX 140-1P56FMJ starting from 2010
YX 149-1P56FMJ-5 
starting from 2010
YCF 125/140/150-5 
starting from 2010
UPOWER-125-153FMI 
starting from 2010
UPOWER-140-1P56FMJ 
starting from 2010
UPOWER-149-1P56FMJ-5 
starting from 2010
TOKAWA 140/149