This aluminium front wheel hub hex is a replacement hop-up designed for LOSI Promoto-MX style motorcycles, listed as model JR-LMX02-GD. It functions as the interface between wheel and axle while matching the hex retention layout used on Promoto-MX frames.
The golden anodized surface denotes the aluminium construction and helps guard against scuffs and surface wear in daily use. As a machined upgrade part, it is intended to supersede stock plastic hexes or older metal types to streamline wheel swaps and strengthen the front mounting area.
Installation notes: remove the wheel per your model’s standard routine, withdraw the existing hex, and install the aluminium hex in the identical orientation. Confirm axle clearance and refit any retaining hardware to the same specification used for your Promoto-MX. Spin the wheel and check bearing alignment after fitting.
Use case: switching to an aluminium hub hex increases repeatability in wheel mounting and simplifies maintenance when you often change tyres or service bearings. It maintains mounting geometry without altering axle or suspension settings.
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