okay. but dosent http://www.rc-monster.com/proddetail...540C_XL&cat=20 that only have 2 wires coming from it , and the mamba max has 3 ?

so pretty much, i need ubec, mamba max, feiago/wanderer 8xl, plus 5mm bore mod 1 to have that set up.

for the stock 40t spur, would you go 14 or 15 t ?