CFMoto use 2 suppliers for this parts, one of the pulley without Strengthen on Primary Tight Pulley Assy. (0180-051204), one with Strengthen on Primar..
CF Moto listed part number is 0800-053100-0001Thread: 20mmMilling Cutter: 25mm / 23TMilling Cutter: 25mm / 23TOil Seal: 34 x 55 x 9Bearing: 6208Inner ..