TRF421X Gear Diff Joints BB

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TAM51764 The TRF421X gear differential joints (ball bearing type) can be used to replace a worn-out part for the TRF421X (Item 42391) or used as an upgrade to the standard TRF421 ( item 42384).• TRF421X gear differential joints (ball bearing type) x2.• These steel gear differential joints give enhanced rigidity in the drivetrain.• Use with Item 51762 Ball Bearing Set for Universal Shafts when using for TRF421 chassis (Item 42384).• Compatible with TRF421 (Item 42384) and TRF421X (Item 42391) chassis. Show more