Yes, I believe you'll need the DF-02 #9400152 metal parts bag A (and the DF-02 #51080 Gear Bag (Rising Storm Spur Gear) if you want to build the entire diff.). The 0.6 module motor pinion is not part of this assembly. I received mine yesterday, and incidentally I broke one of the gears today when trying out a 36mm outrunner... Note the missing tooth on the left hand side of the bevel pinion gear I have noted that some of the other members only replace the p