Diff questions

I also recommend locking the tranny in second gear, it wont take long before you to break some tranny gears when that sudden power from a brushless motor slams the tranny when shifting from 1st to 2nd.

When the tranny is locked in second and the diffs are shimmed & aluminum diff cups the savage drivetrain is easily as strong as any buggy / truggy that I have used in my experience.