Originally Posted by
Igottabeme
The diffs in the ECX 1/18s are not the best diffs to be putting alot of speed and torque into. Go 30+ mph if you want to but be ready with some spare diffs and the cost of the diffs are not cheap you have to buy the whole gearbox assembly just to get the diff. Just my .02 cents.
Would it be cheaper to buy an upgraded one? one that wouldn't break at high speeds?