Feature: 1) Fuel tank with vast capacity, easily to refuel with super caliber, prevent overflowing and leaking 2) Front / rear umbrella gear differential and differential box with leak protection 3) With 13.8g super-light-weight fly wheel, make the engine smaller in load 4) Adjustable-bounce, make spring buffered 5) Differential with 5pcs of screw only, fixing / disassembling is easy 6) The all-metal disc type brakes and super thick asbestos brake block 7) Flexuose 6061 aluminum chassis, 2.5mm aluminum alloy in 6061, Anodic heavy-duty adjustor 8) Variable shockproof spring Double sponge filter, dustproof result is better 9) 7.5mm oversize gas vent, 56mm resonance 10) Can be upgraded: a) Carbon fiber up-plate all-metal oil pressure type shockproof device b) Byte ten universal drive shaft c) All-metal exhaust pipe d) Ball bearing for whole vehicle e) Exhausting backward engine (need to match platform starter or bacilliform starter) Outer packing: 4pcs/carton Carton dimensions: 75.0 x 44.0 x 50.0cm N.W.: 13.00kg G.W.: 20.00kg