RE: Matrix TR FRE pitch?
It's a 1/8th metric pitch( same as mugen, ofna, kyosho).
Unfortunately I am not too sure on how metric pitches are rated. It is not like the standard 32,48,64 pitch that we have here in the states. (Where a 32 pitch, 32 tooth pinion is one inch in diameter, 48 teeth, one inch diameter gear = 48 pitch,etc).
Hope this helps.