Originally Posted by
El Tigre
I just got a '14 XB4 and what is the best pinion gear size to run on the track? I'm currently running the stock spur gear and and a 24T pinion.
Given the information you provided a lot of factors play into this answer so start with the stock setup, and go from there.
Depending on the motor size if you are using a 6.5T motor use an 18T pinion.