Motor has three options for easy-to-replace internal gear cartridges. 

There is a red cap cartridge with an output gear ratio of 36:1 (100 rpm) for high torque & low speed which is best used for lifting arms, moving claws, and other high torque mechanisms. 

There is a green cap cartridge with an output gear ratio of 18:1 (200 rpm) for standard gear ratio for drivetrain applications. 

There is a blue cap cartridge with an output gear ratio of 6:1 (600 rpm) for low torque & high speed which is best used for intake rollers, flywheels, or other fast moving mechanisms. 

The V5 Smart Motor Gear Cartridge can be switched by using the following steps.