The Factory Pro O-AP0008 is a compact rear axle height adapter made for Tamiya F103, F104 and RM01 on-road platforms. It fits at the 1/4 bearing location to permit controlled changes to rear axle height, giving a practical way to tweak balance without replacing core suspension parts.
This adapter is only compatible with the listed Tamiya chassis; confirm the bearing seat dimensions on your specific variant prior to installation. It is intended for RC hobby and track use on electric on-road cars.
Fitting is simple for those familiar with chassis service: remove rear axle support pieces, slide the adapter into the bearing seat to the required position, then refit using the original fasteners. Make measured adjustments and evaluate handling on a setup rig or during cautious laps.
Treat the adapter as a fine-tuning component for rear geometry; small changes can have noticeable effects so validate each step before locking in your setup.
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