Children love them !!! Monkey bike series are the dirt bike we specially designed for children. Its an excellent idea to give children as christmas or birtday present! References for Monkey Bike Model: HD50py-2 "monkey bike". Engine Model: 1P47FMD Dimension (L X W X H) (mm): 1355 X 600 X 830. Gear System: 4 Gears. Max Load Capacity (kg): 70 Fuel Type: RQ90. Dead Weight (kg):65 Max Speed (km/h): 55 Displacement/Power (ml/kw):72/3.1 Fuel Consumption (L/100kw): <=1.9 Brake Mode: Front Wheel: Drum Rear wheel: Drum Brake Operation Mode: Front Wheel Hand Brake Real Wheel: Kick Brake Tyre Model: Front 3.5-8, Rear 3.5-8