This car want to see for your self... Lass 2 days my friend take for me to upgrade only... Im help my friend she upgrade surpass hobby 3650 7700kv..surpass hobby 80a ESC..21 pinion gear..25kg servo and service the oil shock... The car also can run 3s 50c battery too.. After upgrade she test than she is so very like already... After upgrade the top speed is 80kmh-125kmh but im tell she when play must need to use 70% trotter... Wish can help you for this info..