To change the gear ratio in the transmission of the 1/16 revo and slash.
This will change the gear ratio from 5.04:1 to 9.72:1
This mod is for those who are wanting to use large tires or just want a lot of torque
Sorry this is not a full step-by-step how-to but it is pretty simple.
1) Remove the transmission
2) Open the transmission
3) switch these two gears
4) and put it all back together