it looks like a really old adapter. maybe the MC05? i dont know, maybe bikemike will see this. he will know for sure. id like the 23 spline coupler cause i want the TS 23 4.7 gears, then id be 23 throughout my cases.
i have an mc7 with the AA casting it cant be THAT old
souldnt you be worrying about axles and gear not tcase parts
