LOS2522121 Outdrive Cups

This part number corresponds to a replacement outdrive cup set used in Losi drivetrain systems, where the driveshaft pins engage the differential or transmission outdrives to transfer power to the wheels.

For LOS252212 Outdrive Cups, this is a drivetrain wear component that connects the center or axle shafts to the differential, allowing torque transfer while still permitting suspension movement. These cups are critical for maintaining smooth power delivery and preventing slop or binding in the drivetrain under load.

The design typically features:

• Hardened metal construction for durability under high torque loads
• Precision-machined pin grooves for consistent driveshaft engagement
• Direct-fit replacement for factory differential or transmission outdrives
• Compatibility with matching Losi axle/CVD systems depending on platform

These parts are commonly replaced when you notice:

• Clicking under throttle
• Excessive drivetrain slop
• Rounded or grooved cup surfaces
• Reduced acceleration efficiency under load

In short, they are a key drivetrain interface part that keeps power transfer smooth and reliable between the diff and the driveshafts.