currently am running a hpi sprint 2 flux, motor swapped to a castle creations 6900kv with a 2s lipo. Running the Sidewinder Sv2 ESC
gearing is 23p /87 spur and temps are as follows:
lipo battery: 104*F
cc motor: 140*F
ESC:
170*F 
so I'm wondering, how do I get the esc temps lower? gear down on the pinion? and to what size should I change it to? I still want good top speed, but I want to be able to do donuts/drifting, etc without the motor overheating, or the esc.
I blew a tire off on my first run too, lol....this thing is retarded fast on top end.