Nue ?
 

Im running a 8t with mmm 2.5d geared 46/15 and a 5s batt,it runs about 40 i was thinking of going to 6s geared the same that would put me at 47. It run real col for temps now going to 6s will that be too much on esc and motor (bashing only truggy).

6s on the 2.5D is great for bashing. Just keep an eye on temps for a little while after the change. You may need to adjust gearing a bit if temps don't stay cool enough.