Originally Posted by
mvrk28
That was my question, basically the 72 tooth is out of stock for the Exotek. So my question was what would the effects be of a 68, because it's available.
You may not get a 20 or even 21 pinion to work with a 68 spur... someone said that 19 pinion was the smallest they could fit with the 72 spur, if you go to 68 spur, then the pinion would need to be bigger... like 4 teeth to make up the distance.