Originally Posted by Qatmix

I do not think the kit esc would work with a 3cell lipo. The kit esc is supposed to go down to 10.5 sensored motors on 2 cell lipo. If doing that I would suggest adding a fan to the kit esc as some people have blown them with a 10.5 whilst others have been fine.

A 10.5 with 2 cell lipo and low gearing will still get you some good speed. Other than bearings, alloy prop / prop cups, high speed gear set etc there is not much needed to handle the speed. I like the adjustable motor mount from yeah racing, but the Tamiya alloy one is also fine if you do not want to mess around with custom gear options.

Steel internals for the diffs are not needed for onroad, they just add weight. I run a TRF and that has plastic internals and I have never had an issue with them on my tt02's and top end tc's