I bought two of these and love them! These are a fully ready to run out of the box, but after four days of driving it, I broke two shocks (the metal shaft at the lower "cup") from hitting rocks that fit between the front wheels, and three axles (at the "dog done" at the differential housing) while accelerating in a straight line! So plan on upgrading or replacing some of the parts. Luckily the Teton is almost exactly the same (except for tires (wheels & rims [same 12mm hex mounting], body [same mounting posts, not sure on location], etc.) so there are already lots of upgraded and discounted parts out there, including Aluminum axles and the Upgraded shock assemblies. You can also use the LaTrax Rally parts in a lot of places, including the spur and pinion to make it faster. These trucks are FAST, I would think upgrading them would make them on the verge of uncontrollable unless on a groomed track/surface. The only other things to note, I have to clean the spur and pinion gears with a razor blade every time I drive it on sand/dirt. Highly recommend, but warn that in pure stock form, it rips itself apart. LOVE IT!!!