Diffs

Learned some time back, the only way to build a solid diff using trx parts is to use an alum diff cup with the 3mm screws, modded ring gear to use 3mm screws, shim for proper gear mesh and put the diff in a set of alum cases/diff collar. I've used gpm, integy and GA alum diff cases - use cheapest ones you can find. Plastic diff cases (even the 3.3 with 4 screws) will flex just enough to let pinion pull away from ring and that over time is what strips the gears. Metal cases holds it all in alignment and stops the flex and stops gears from stripping.

Only other way to make diffs last is to never punch it or jump it. Both of those are hard to do, lol!!