For the engine with the clutch semi automatic with 69 tooth. Bike without clutch lever.
Able to resist with all upgrade engine parts
This is the part that must be replaced if you find any filings by the rubber drain. Indeed this part contain 6 rubber that wear during racing use.
Affectation engine semi automatic clutch :
88 UPOWER RACING
Lifan 50-139FMF
Lifan 88-147FMF, 1P47FMD, 1P47FMF
Lifan 110-1P52FMH,
YX 50-1P39FMFA
YX 70-1P47FMD-2
YX  88-147FMF
YX 110-153FMH
ZhonShen 50-ZS139FMB (BK50), 1P39FMH
ZhonShen 70
ZhonShen 88
ZhonShen 110 -ZS152FMH (BK110)