Transmission axle extension

Extend and adapt your slot transmission with precision

The AV20557 transmission extension axle is a preparation accessory designed for those who need to adapt 2 mm shaft motors to transmission configurations that require greater length or reach in the drivetrain. A small but crucial part when the assembly does not allow for direct coupling.

Function and performance

In many chassis preparation or conversion projects, the distance between the motor shaft and the crown gear does not always match the standard length of the available shaft. This extender directly solves that problem: it extends the motor output shaft so that the powertrain is correctly aligned and transmits power without losses or unnecessary play.

• Compatible with 2 mm shaft motors.
• Allows adjustment of the transmission length in custom assemblies.
• Useful in motor conversion and non-standard chassis adaptations.

Compatibility and applications

This type of accessory is particularly useful in sidewinder (motor parallel to the rear axle) or inline (motor in line with the rear axle) configurations, where the available space within the chassis may require repositioning the motor or using shafts of unconventional length. It is also common in scratch-built projects or in adapting aftermarket motors to chassis from different brands.

Assembly and preparation

The assembly is straightforward, but it is advisable to pay attention to the alignment of the assembly to avoid vibrations or premature wear of the crown gear and pinion. We recommend always checking the concentricity of the shaft before permanently securing the motor and ensuring that there is no excessive axial play once the extender is assembled.

Frequently asked questions

What shaft diameter is this extender compatible with?

It is intended for motors with a 2 mm shaft, which is the most common standard in competitive and general-use slot motors.

Is it valid for both sidewinder and inline configurations?

Yes. It can be used in both configurations as long as the motor has a 2 mm shaft and the assembly requires extending its length.

Do I need any special tools to install it?

It is not essential, although having a caliper to check alignment and a shaft holder can facilitate a more precise and durable assembly.

Can I use it on chassis from different brands?

Yes, as long as the installed motor has a 2 mm shaft. It is a generic preparation accessory, not exclusive to any particular chassis brand.

The AV20557 transmission extension axle is a precision slot car preparation part designed to adapt any 2 mm motor shaft, ideal for custom chassis builds, motor conversions, and non-standard drivetrain setups. Compatible with sidewinder and inline motor configurations, it ensures proper powertrain alignment for competitive and recreational slot racing.