Dr. Pulley CN250 Variator Kit

Dr. Pulley Performance Variator Assembly for 250cc 4-stroke water-cooled CN250 172mm engines. Specially Designed Ramp Shape Extended Ramp Length Adjustable Boss Length Racing Type Ramp Plate Includes Instructions Includes Sliders Does Not Included Roller Weights Number of Splines: 21 Drive Face Outer Diameter (A): 128mm Boss Inner Diameter (C): 17mm Boss Outer Diameter (B): 27mm Ramp Plate Inner Diameter (D): 17mm  Fan Inner Diameter Peak to Peak (H): 15mm Fan Inner Diameter Valley to Valley (G): 16.5mm