This aftermarket hop-up is a direct replacement for the Tamiya F104 chassis and is listed as part number F104-08/18/FG. The single-piece T-bar measures 1.8mm thick and is intended to let drivers alter front-end stiffness and steering response without changing the basic suspension geometry.
Compatibility is limited to the Tamiya F104 series; verify your chassis mounting points before fitting. The unit mounts to the same points as the original T-bar and swaps in directly to affect how load is transferred through the front end during cornering and direction changes.
Fitting notes: remove the stock T-bar and install this one-piece unit using your existing hardware and standard hex drivers. After installation, carry out short test runs and adjust incrementally to assess steering balance, combining changes with toe, camber, or roll center tweaks for finer setup control.
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