^yeahthat
A bit late on this one, but I totally agree with Vit, I got the synchrotech carbon syncros brand new from synchrotech directly around September 2012. They had an update before then on them that's why the date is important. I was revving to 8800 at the time. And they were no better than OEM, in fact I thought they were worse.
The issues with our cars transmission isn't the synchros. its typically a CMC adjustment issue, but once you grind a gear a few times you ruin the engagment teeth on both the gear and the sleeve itself. Once this happens nothing will fix it short of replacing the gear.
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