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  1. E

    Bosch Gen 5 speed chip: legal issues and bike damage?

    Does this mean replacing the gen 5 with a gen 5 will need registering with the smart hub to work with the bike? Essentially if you void your warranty with a tuning chip the only way of replacing your engine is through bosch?
  2. E

    Bosch Gen 5 speed chip: legal issues and bike damage?

    Would a gen 4 engine work on a gen 5 bike like the trek rail?
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