Is the MN MODEL MN78 RC CAR differential made of metal?

The material of the MN MODEL MN78 RC CAR differential is not necessarily metal, but metal is a common choice for manufacturing differentials. Differentials are usually composed of multiple key components, including planetary gears, half-shaft gears, planetary gear shafts and differential cases. The material selection of these components will directly affect the performance, weight and durability of the differential.