Update receive more goodies today.
UE 8 spyder gears:
Tekno RC Neu 1515 1Y/F:
Neuenergy 2x 25C 3S 5000mah batteries:
I test-fitted the motor with an assortment of pinions ranging from 18-21T and I didn't see any fitment issues. The motor was not even touching the tranny case with the 18T pinion.
More pics:
I dremeled the stock motor holder for fit the 21T pinion: