Dr. Pulley Variator Kit for 125cc – 150cc Vespa ScootersSPECIFICATIONS: Includes Slide Pieces Does Not Include Roller Weights Number of Splines: 21 Drive Face Outer Diameter (A): 120.5mm Boss Inner Diameter (C): 17mm Boss Outer Diameter (B): 26.9mm Boss Length: 46.5mm Ramp Plate Inner Diameter Valley to Valley (D): 17.15mm Ramp Plate Inner Diameter Peak to Peak (E): 16.5mmCOMPATIBILITY: Aprilia – SR Max 125, Sport City 125Gilera – DNA 125, Nexus 125, Runner 125Piaggio – Beverly 125, Carnaby 125, Liberty 125, X7 125Vespa – ET4 125/150, GTS 125, LX 125/150, LXV 125/150, S 125/150, GT 200**