ive put two different brushless systems inthis truck 4370kv leopard and 3200tacon both on 60 amp esc
the leopard was fast and not as hard onthe diff,but got hot.the tacon is not quite as fast and doesent get hot , but man does it pull,and schreds the diff.. does anyone know of an upgraded diff ,or if there is a solution tothis problem.

Wait, what are you trying to say?</p>

His car is shredding diffs with big power, and his 4470kv motor is not geared right. That's what he's saying.

i dont want to buy stock diffs any more if there is a better one ,butt i cant find one,,and was also woundering if gearing was the prob....   just lookin for advice
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Are your gears in the exceed plastic or metal? If they are plastic, redcat and I'm 99% sure Himoto diffs would be steel.

Internal gears and ring&pinion gears are steel. The plastic diff cups from an HPI nitro RS4 3 *might* fit. What part is breaking, the ring&pinion or the internal gears or the plastic cup?

its the big  diff gear internal,and its metal ,but seams tobe low grade...

Get new diff cups, and try dropping HPI's diff gears in there. When you break the internal diff gears, that chews up the diff cup, and the gears don't mesh as well as they used to.