What will I need to make my Aftershock drive reverse also?
My conversion is almost done, only thing missing, is to install a one speed hub, and remove the mechanical brakes, and maybe switch places between the esc and batterytray.
without knowing all the details on your setup and not being familiar with the Aftershock I can't be positive. But it looks like your using an electri clutch adapter, even when spinning in reverse the shoes will engage. As long as the tranny doesn't have some kind of one way bearing in it I would guess that all you need to do is enable reverse on the esc
once the one speed hub is fitted ,you should be able to go in reverse as long as the electric clutch engages,if it does you will have to change it to a standard pinion.