I tried the new 3racing balldiff for M05, and as i suspected it was bad.
Tried writing review 2 times on RCMart and both times they have deleted the review. My advice is to NOT buy them, rather use TA03 balldiff or wait for new M05 Tamiya diff. The problem is thrustbearing that is way too weak and gets eaten up in less than a battery. I tried changing it to Tamiya thrustbearing but then the diffballs melted the whole blue wheel. It's badly designed and even worse built. Avoid by all things sacred!

http://www.rcmart.com/catalog/rc-3ra...h=595_744_1389
http://www.rcmart.com/catalog/rc-3ra...h=595_744_1389

It looks good, but it's utter crap! And since RCMart won't allow fair reviews on their site this is the only place i can think of where people can understand how bad this is!

I run my M05 with EzRun 13T and not some mega bucks brushless system.