transport derailleur guard

This part is designed to protect the rear derailleur on thru‑axle frames during bike transportation. It is compatible with both Shimano direct‑mount hangers and standard derailleur hangers.
The assembly consists of the following four components:

a derailleur‑mounting fixing piece
a left axle spacer
a right axle spacer
an idler wheel

It is recommended to run a tap through the threads to verify that they are clean and accurately cut.
Adjusting the spacer length to fit the frame and derailleur will ensure proper alignment and protection.