Building an emaxx.... It's been a while

[nitrostarter]

4s, a 1900kv buggy motor, and badlands you could probably go with RPM bulls and keep the stock diffs and save the weight. That slipperential should help preserve the diffs as well.

The newer maxx and Summit style driveshafts are thicker and have better joints than the old school Maxx driveshafts. They do hold up to the power better so you could like get away with these without issue. A set of Traxxas CVDs would pretty much solidify the driveshafts and add 0 to little weight tho.
Centers should be fine with stocks.

[jhautz]

Thanks for the input. I think I am going to stick with the combo bulks. In my experience the aluminum diff case really made the stock diffs alot more durable and that was really the primary reason for going with the aluminum combo bulks.

I was thinking that the plastic drive shafts woukd be strong enough since way back when I did a revo conversion the plastic shafts actually held up better than most of the steel CVDs I tried going to the wheels. Over time they did start to stretch and twist at the joints, but was also running a 6s setup. When they started to get loose I just replaced them. But back then I did have steel dog bones in the center. The plastic center shafts was what I was mostly wondering about.