Originally posted by bxd20:
Terry,
Can gears be mixed between the MTX-75's? For example, Duratec 1-2-3 with Zetec 4-5 ?


The MTX-75 gearing is identical in both versions: Duratec or Zetec.
It is the differential (Final) gearing that is taller in the Zetec version. 3.84 vs 4.06


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.