M40S Assembled Pro Differential w/ Metal Gears
For ultimate power delivery and improved durability. This is a must-have option for the M40 series.
A direct replacement over the old plastic differential gear set allows you to use a faster motor and more powerful batteries without damaging your drivetrain.
Comes fully assembled with grease installed.
Fits Carisma models: M40S, M40B, M40DT, M48S.
