a word of advise:
whenm buying bulkheads for maxx trucks, make SURE that you get good quality units. there are some VERY cheap ones that will break just as easily as the plastic ones. good ones are made by fastlane machine, and great assembly RC (6061 or 7075 aluminum) (i have the 7075). I would also HIGHLY recomend RPM a-arms. they weigh the same as plastic, but they are nylon and will not break. I have hit posts going ~40mph, and hit the control arm, which did not snap. the bulkheads did not either. if you get AL bulks, and arms, then one of those will bend. the RPM arms will bend, then rebound.
http://www.greatassemblyrc.com/Store_De ... nfoID=3573
http://www.rpmrcproducts.com/products/t ... tm#3_3arms
I don't know how new you are to Maxx's but I am very familiar. If you are familiar, please don't be offended. I'm just trying to give a little help.