This RC-scale spare part functions as the drive cup within the front solid axle assembly offered as an optional item for BD5. It is intended for the joint axle section of an aluminum solid axle and provides a direct replacement when the original cup shows signs of wear or damage.
Fitting a new drive cup supports consistent axle geometry and predictable wheel response under load, which is helpful for regular maintenance and when returning a solid axle to factory alignment on 1/10 touring chassis.
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