5t pinion on it.  I put a 13t back on it the last spur gear change I did.  I know you guys are gonna hate me for this but I have no idea what the temp is.  When I bought it I only had nitro trucks at the time and knew nothing about electric.  I never knew heat was a problem until I started reading about it on here, and I figured by that time if I never had a problem with heat i