Originally Posted by Riverbluff

I would recommend running the car without the brass c (or d) mount. At our local track which is low/med traction dirt I am running my 6D with the aluminum c mount and kit d mount, 3 gear trans and 17.5 motor and have plenty of traction. We have another guy running his in mod and he also has plenty of traction, to the point the car pushes a bit and he is running the aluminum d and c mount. We have another guys running mod with the brass c mount and his car pushes a lot and actually has a bit of pendulum effect when the rear end breaks free.

As far as upgrade recommendations, +1 on the aluminum d mount. I would also recommend the aluminum steering rack (that's just my personal preference). The kit is just super solid out of the box after that.

Seems to be a lot of folks here on the forum breaking the carbon fiber shock mounts, but I just don't see it at our track, and there have been some really hard crashes. I haven't seen one break or crack yet.