Save your choice time: A clutch kit that meets your driveline needs eliminates the time and effort required to find the right model (and the risk of buying the wrong model). You will get: 1*clutch Assembly 1*Variator Assembly 1*Gates 743 belt, You only need to confirm the corresponding engine or model. These three parts are applicable in sets. High quality clutch:19 Splines Inside The Clutch Drum/Bell OD of Drum: 136mm??ID of Drum: 125mm ID of spline area: 14.4mm??Pulley Diameter: 140mm??Fits GY6 125cc and 150cc 4-Stroke Engine The Belt is made of high heat-resistant and high-strength materials??Belt key parameter 743x20x30, Premium belt provides longer durability for applications. Variator Assembly for gy6 150cc??Roller Size??18*14mm Drive Face Size:Spline Shaft 19 teeth; Diameter 117mm; Hole Diameter 15mm Variator Size:Diameter 108mm ; Variator Pin Length:52mm; Variator Pin OD 24mm ID 15mm??Fit GY6 125cc&150cc 152QMI 157QMJ Engine Gy6 150cc high performance clutch set with 743 belt Jog 90c