XRAY - Model racing cars

Have someone get me out of doubt, I usually use composite spreads Capricorn, the other day I had a lot of grip and rear differential break, (already had two years of use).
and seen on the web there xray optional pinions for composite nt1, my question is if anyone has tested to see if they are reliable or break grip like the others, these are the original xray:
greetings.

I have been racing them all season, no visable wear and have not broken one yet - so i say go get them

But, if you dont want the risk of them breaking - use the steel one.

hello, thanks for your answer.
and decided to reassemble the composite, because the difference in performance is great, also not expensive.



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