(1) Newly C-hub steering system. King pin axis extend to the wheel center improves steering performance. (2) Newly developed suspension system, twin adjustable rear suspension modes for flexible driving mode & smooth driving mode. (3) New lightweight ultra-compact gear box with a low center of gravity and high durability. Front bumper's backward movement, protect chassis distorted even broken when landing after jumps. (4) Solid aluminum chassis, centralized chassis design to get quicker steering and fast response. (5) 16mm super big bore oil shocks. (6) Newer Gear Ratio, offers better acceleration and higher speed. (7) Easy to maintain and repair pinion gearbox. (8) All Steel Gear. (9) Fully Adjustable Sway bar ball cups. 2pcs/Carton Ctn Size:66.9x46.4x38cm G.W:13.7KG.