Originally Posted by Poor_Boy

Yes now that the MR04 Ready Set has been released it will be legal for box stock. Similar rules to the 03 box stock with the exception of the front knuckles. As Kyosho has not released an aluminum knuckle and the stock 04 knuckles are very brittle any standard profile 0 camber knuckle will be legal.

I suspect the MR04 is going to make box stock faster and easier to drive hopefully helping people have more fun when they are leaning.