It s to use on a yokomo MR4BX. spur 87 internal 2.2
It would be a 15 pinion?
In general with the GM pro you need to lower in pinion than with the evo 3.
Originally Posted by
Martin Hofer
gear ratios are always 1:x so yes gearing should be between 12.x and 14.x
as for your gearing request ... I cannot make any use of the information that you use a 17T pinion ....
if you give me a fdr I might be able to help