Ceramic Diff Balls
I would recommend everybody to change the tamiya lightweight diff balls for ceramic!
I race indoor on polished floor and had to rebuild diffs after every meeting as they were very rough!
I upgraded the standard diff balls to ceramic and have raced 15 meetings without touching the diffs! Also change the m2 bolt and lock nut in the diffs, so once they are set they wont loosen!
(using the tamiya diff covers to keep dust out)
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