These steel gearboxes provide extended durability not only over the plastic gears but also over the traditional Heng Long cast/zinc alloy metal gearboxes.
Newest version now includes solderless cables with connectors for BOTH original 2.4ghz MFU and TK6.0 MFU. See pics
Please note: This gearbox will fit:
Heng Long 1/16 Tiger I and 3819 Panther (Pantiger)
Panzer III, Stug III, Panzer IV
M4 Sherman, T34-85