This part is an aluminum center pulley frange designed for installation inside the center pulley of the YZ-4 chassis. It is supplied as 1 pcs and is intended as a direct replacement component for the center pulley assembly on YZ-4 scale RC models.
Functionally, the frange positions the inner face of the center pulley and contributes to maintaining axial alignment of the center drive. When servicing the center pulley assembly you can replace the inner frange to restore correct spacing or to standardize the contact surface where the pulley sits.
Installation requires disassembly of the center pulley assembly to remove the original inner flange and fit this aluminum frange in its place, then reassemble the pulley assembly. After reassembly, verify the center drive alignment and axial clearance before running the model.
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