New M40S Assembled Pro Differentials With 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.