Removing a cell will not neceserily lower the running temp you will lose a bit of top end and also some bottom end grunt but you probably wont lose any runtime either, you could possibly gain some.
It`s true, the only problem is when running IB`s with 5 cell they will only be good for about 5 runs before they lose their edge.
The KR isn`t really the best motor to be using off road in my opinion as i have found they are all revs, ideal for on road but wouldn`t really pull the skin off a rice pudding.
Buy a checkpoint or a brushless
