Compatible for: Gy6 50cc 80cc engine 139QMB/147QMD(most of chinese brand 50cc/80cc scooter) Roller weight: 8.5 gram Original Supplier Factory: We supply our variator kits to BAOTIAN, BASHAN, BENZHOU, CFMOTOR, CHARMING, DAYANG, DINLI, FUXIN, GEELY, GILERA, HANGLONG, HAOJIN, HAOJUE, HONGZHOU, HUATIAN, JIAJUE, JIANSHE, JINLUN, JMSTAR, JONWAY, KAITONG, KEEWAY, KINROAD, LIFAN, LINGBEN, LINGTIAN, LINHAI, LINTEX, LONCIN, LONGJIA, MAWI, MEIDUO, MOTORRO etc. Advanced material solid structure high strength and long life span Outer diameter (variator): 87mm Product Description Brand new primary clutch variator assembly for 50cc 4 Stroke Scooters ATV, Go Kart, Fitment: gy6 engine 50cc 60cc 70cc 80cc 100cc Roketa, Sunl, Baja, Yiben Jonway Jmstar, Vento, Tng and Various unlisted makes/models. Complete Variator assembly as shown in the picture includes: Unrestricted drive boss / slide bushing Primary Drive face movable pulley 6 x Roller weights Ramp plate with 3 x glide keys Star retainer Outer pla