The black finned Feigao 540 XL ??

[hemiblas]

I havent seen them around lately. I have had good success with the smooth can motor and the Novak heatsink. I noticed temps drop pretty good with just that upgrade. Its also much beafier than the heatsink that comes with the finned motors.

A lot of guys also run the RCM heatsink that keeps the ends from popping off. That helps keep the motor together and gets rid of some heat. THat can only work with the smooth can motor too.