Like the above posters said, 170-180 Fahrenheit is considered the upper limit for brushless motor temperatures.

The Raze had a 3.31 diff ratio, and you've got it on a 2800kv buggy motor, 14t pinion, 46t spur.

Holy crap. That's a 1.33:1 rollout. That thing is way, way overgeared.

Take it down to an 11t pinion (1.04:1 Rollout) and try that instead.