- All the transmission gears are make of perfect steel tooth that machining minutely - All car with the ball bearing - 21CXP cnginc pulling start-up - High capacity oil box,the perfect sealed character,convenience for adding oil - Aluminum case-coated exhaust pipe - Aluminum alloy front and back shock-absorber,8 pcs shock-absorber steel reed,silicone grease shock-absorber - The steady brake system,the perfect stability of running operator steady - With the two chunnel,multifunctional and multi-frequency digital transmitter - The front and back wheel all adopt cardan spider power train,super big wheel 4WD - High quality aluminum alloy upper plate