The differentials of the Revo have been beefed up substantially, and bear very little in resemblance to the ones found in the Maxx. The plastic housing that holds the differential no longer has left and right sides, but rather front and rear halves. This is a common setup found with 1/8 scale buggies. It will also eliminate the difference in gear backlash that the Maxx would often see when the plastic case screws were torqued down differently. Also the bearing on the ring-gear side of the differential is 8x16mm, which is beefier than the 10x15mm bearing found on the other side of the differential. The 8x16mm bearing can handle the much larger thrust forces that are dished out on the ring-gear side of the differential. You'll also likely notice that, in keeping with the theme of sealed bearings throughout the Revo, these bearings are sealed as well.

The plastic case halves also have threaded metal inserts in them as well, which helps to increase their holding strength. Hex head fasteners are a common sight throughout the Revo, and the differential area is no exception. Hex head screws hold the differential housing together as well as the differential itself. The small stainless screw screws found in the Maxx differentials don't hold a candle to the hardware that's used to hold the Revo's differential together.