[suicideneil]

I believe it is/was traxxas themselves that offered the delrin gears as an aftermarket upgrade to the stock nylon ones. Since the 3906 is now a legacy model, those optional gears seem to have vanished from buytraxxas.com where they used to be available (unless Im going blind again).

I can understand the using delrin though, its a great material- self lubricating with use if Im correct? **rude joke potential at 100%**