Thunder Tiger MTA4 Main Spur Gear with 52Teeth.
As the original gears are no longer available, this has been printed on a 3D printer using a very durable ABS filament, which is resistant to temperature, oil and Nitro fuel.
I try to keep a few in stock but sometimes there may be a short delay in shipping (24 hours) while printing is taking place.
I have many more Thunder Tiger parts fpr sale. Please ask if you cannot find what you are looking for'