I have a YZ10 91 works change to 12mm hex hub. I use DB01 (yeah racing) 78mm Universial swing shaft in the front with changing the wheel side part to BD5. Still ok to go. For the rear, I still looking for solution. Currently using Top force dog bone but need to insert some o-ring or sponge in to the outdrives to keep the dog bone in position. 74-76mm CVD will fit the rear. Team C TM4 has 74mm Universal swing shaft but not sure the diff side fit or not. If you could fine MIP type CVD, it need 79mm (measurement is different as the joint location is not the same). Another solution which yet to try is combine the top force universal swing shaft and DB01's rear. A long wheel shaft plus 70mm swing shaft. But then the whole shaft will be push toward the diff side and need a 3mm width washer to fit in the gap.