Knock on wood but the only thing I have broke in a months worth of racing is one set of gears on the oneway. The car has taken some serious abuse the past two weekends running mod and has not missed a beat. If you are worried about breaking gears get the diff. I know that PRP will be getting the oneway plate done this month so that will take care of the gear issue. If you are on high bite a pair of Associated blue and silver springs will be good to have. They seem to be one step stiffer than the stock springs. I have had tremendous luck with the kit setup with 40wt oil and a Parma Alfa body.