High Performance Racing Front Variator GY6 150cc Chinese Scooters Details: Performance Front Variator 12.5 Gram Copper Core Roller Weights 14g weights Variator face diameter: 114cm [4.50″] Variator center hole diameter: 23.9mm [.94″] Ramp Plate Inside Diameter: 15mm Teflon Coated Slide Plate With Urethane Cushion Rubbers The Inside Ramp Angle Moves The Belt out Further for More Top Speed Variator includes Slide Plate & Roller Weights & Inside Variator Half Fits Chinese Based 4 Stroke 150cc Engines