Carisma - Assembled Pro Differentials w/ Metal Gears, for Carisma M40S Bodies Short Course Direct fit hop up requires

Direct fit hop up requires no vehicle modification for use

Now you can drop the body an extra 3/16" (4

Hot Racing light weight hardened steel 55 tooth

which was optional in the original model

Fixing a model body to the stand from the inside

Carisma - Assembled Pro Differentials w/ Metal Gears, for Carisma M40S Bodies Short Course Direct fit hop up requiresFor 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.