This RC-scale spare part is the drive cup used in the front solid axle assembly offered as an optional item for the BD5 chassis. It fits the joint axle section of an aluminum solid axle and serves as a direct replacement when the original cup shows wear or damage.
In practical setup and tuning, this component helps preserve axle alignment and steady wheel rotation under load, and is useful during routine maintenance or when restoring a solid axle to correct geometry. The description applies to 1/10 scale touring chassis and is not intended for full-size use.
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