[spikeymike218]

one of the heat sinks offered in the kit racers is a curved one that actually is rounded and wraps around half of the motor when closed. this particular heat sink was made to increase running time on the kit racers which i'm pretty sure would do so. this is because since the heatsink is touching half of the motor, then the heatsink is able to dissapate heat much better and in return keeping the motor alot cooler than the other heatsinks. so for this heat sink, it actually does serve a purpose other than looking nice.

i think the other heatsink that has a brown/black coating on it also dissaptes heat better then the original all chrome/metal one. since black or any dark color draws in heat very well, this would lead one to believe that the heat produced by the motor would be absorbed by the black/brown coating on the heat sink. a good real life example would be to look on the engine valve cover of..lets say... an acura integra gs-r. notice that the valve cover(which also acts as a heat sink) is coated in a black wrinkle paint finish to dissapate heat. imagine if it was chromed/polished, and after a hour of driving or so, that valve cover would be way too hot to touch.