Arrma

The steel frame rails (often 1.5mm thick in this model) resist twisting and flexing when driving over uneven terrain. That means the suspension and tires do more of the work rather than the chassis distorting.

Sealed ball bearings are a great feature in an SxS (side-by-side) because they keep out dirt, mud, and water while reducing friction. This means smoother performance, less wear, and longer part life.