When i race in truggy and buggy clase, the diff fluid is always lighter on the back. For exemple, on my truggy, i've 5000 front, 7000 center and 1000 rear.

Having the front eavier than the rear allow you to have better bit in exit of corner, and lighter on the rear allow to have better stering.

So du to the fact that the revo don't have front diff and i'll use it mainly for bashing, i don't know wich fluid i'll put in the diff.

In my first revo, i had 50000 on both fr and rr, but don't like the "almost locked effect" that the diff had.

So for this brushless one, i'll gona race somes times with it, so i'll probably try 7000 front and 5000 rear.

savage gears won't fit either.

^^^ I agree, I got more power than any , ANY italian nitro, going through mine and no problems. I'm running a Neu 1515/2.5d (1700kv) on 5s and they don't complain. Like Jhautz said "Bar none the best upgrade for a revo based truck" I am thinking of going to HB diffs in my UE set in my Gmaxx

Does it fit?
 

Will the Mugen MBX5T gears fit the RCM cases?

I notice they have a 4.6:1 ratio. It's a 46 tooth ring with a 10 tooth spiral pinion gear.

One way to tell which gears will work is to measure the ring gear. It will need to be no larger than 38mm (1.500 inches).