They are custom shafts developed from scratch, no mazda stuff used. keyways and tapers to attach the lobes and the grey sections are solid pieces. The splines are only on the end for the counterweight. Yes top one is 6 rotorDavid, can you explain this photo for me.
Is the top one a 6 rotor E shaft?
are they multiple piece E shafts that are splined together?
Is the bit that is grey/silver in color part of a factory Mazda E shaft?
Does that part still need to be ground and polished again?
Keep up the great work, Ryan.