4000MAH large-power LIPO lithium battery. 2.4g fully proportional synchronous 3-channel gun remote control. Professional 3-wire metal steering gear (2.2kg torque). Front and rear four independent suspension system. 80A brushless non-inductive electronic speed controller. Damped independent metal oil pressure shock absorber. Waterproof brushless 3650 KV3300 four stage motor. Front and rear alloy double differential. Full car ball bearing high speed bearing.