Thread: Birdy thread
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Old 07-21-21, 07:20 PM
  #1562  
Samidare
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I am unsure about birdy 2 but birdy 3 uses a 68mm BSA threaded bottom bracket.... So either can use a 24mm crank or a 30mm crank depending on the crank spindle.
There are a few options available out there.
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