hmm... not sure of any brands of servo who provide SAE measurements, most will typically list them in Metric.
Another thing to consider is if the servo is a standard 3 wire that plugs into a Rx or is it an on board style with 5 wires?
Here's one servo to consider which measures 40.5X20.3X28mm:
JX uses 25T splines, so that might be another factor to consider when selecting a servo if you don't have the option to switch out the servo arm?
(Last edited by BillDeLong : 7.12.17 at 1:02 pm)
eTruggy + eBuggy + 4WD Mod SC + 4WD Mod ST + 2WD Mod ST + 4WD 13.5T Buggy + 2WD 17.5T Buggy + Spec Slash