ENGINE PMX-50 PMX-90 PMX-100 Type 2 Stroke,Forced Air Cooling 2 Stroke,Forced Air Cooling 2 Stroke,Forced Air Cooling Bore 40 mm 50 mm 52 mm Stroke 39.2 mm 42.0 mm 50.0 mm Piston Displacement 49 CC 82 CC 106 CC Compression Ratio 6.8_1 6.5_1 6.5_1 Ignition CDI CDI CDI PERFORMANCE PMX-50 PMX-90 PMX-100 Max. Power 4.6 ps/ 7000 rpm 7.2 ps / 7000 rpm 8.1 ps/ 7000 rpm Max. Torque 0.5 kg-m / 6500 rpm 0.8 kg-m / 6500 rpm 0.9 kg-m / 6500 rpm CHASSIS PMX-50 PMX-90 PMX-100 Front Brake Hydraulic Disk Hydraulic Disk Hydraulic Disk Rear Brake Drum Brake Drum Brake Drum Brake Front Tyre 120 / 90 -10 120 / 90 -10 120 / 90 -10 Rear Tyre 130 / 90 -10 130 / 90 -10 130 / 90 -10 TRANSMISSION PMX-50 PMX-90 PMX-100 Clutch Dry Style, Centrifugal Type Dry Style, Centrifugal Type Dry Style, Centrifugal Type Gear Shifting Automatic / Variable-Ratio Automatic / Variable-Ratio Automatic / Variable-Ratio CAPACITIES PMX-50 PMX-90 PMX-100 Fuel Tank 5.1L / premium or unlead 5.1L / premium or unlead 5.1L / premium or unlead Oil Tank 1.1L 1.1L 1.1L