This bearing holder is an RC-scale replacement part specified for the Lepton Lex line, presented under the Hirobo HI0304032 identifier. It provides a dedicated 16mm bearing seat to support a tail or intermediate shaft assembly, keeping alignment consistent under operational loads used in model helicopters.
Fitment and tuning role focus on mechanical alignment rather than powertrain changes. Installers should verify shaft diameter and bearing outer dimension match the 16mm seat before fitting, then use the holder to reduce axial play and aid fine trimming of tail responsiveness during setup and pre-flight checks.
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