After running my 2s packs for about 4 hours of run time I ran a 4s 25C 5000 Poly RC pack through my MMM with no issues. Ran the truck hard for about 12 minutes ESC temp measured 120 motor temp was 155. Trucks gearing is 16/47 with the Savage trans locked into second. It was only one pack at 4s but great none the less.

Darion