It is not a Super Nitro RS4, it is an original Nitro RS4 RTR. This was HPI's first nitro offering to the US. I have one with their original .12 pullstart engine in the back of my closet. Someone went through the trouble to put a 2-speed transmission on it (which it did not come with) and a better engine (OS was miles better than their original Nitro Star .12).
It's not what you know; it's what you can prove.
The only thing that is for sure is that nothing is for sure!!!
The needs of the many outweigh the needs of the few, or the one.
There are 2 things in life that are infinite: the universe and stupidity.