54238 Tamiya M-05Ra Reinforced Ball Differential Cup Set. Oppgraderingsdel fra Hop-Up Options serien til Tamiya.
Info fra Tamiya:
These reinforced differential joints feature superior durability which is ideal for rally driving and modified cars.
Can also be used with any M-05 series machine equipped with Item 54194 M-05 Ball Differential Set (Use in place of set-included aluminum differential joints).