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Old 05-18-15 | 10:54 AM
  #5  
dr_lha
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Joined: Oct 2014
Posts: 4,843
Likes: 16
From: Central PA

Bikes: 2016 Black Mountain Cycles Monster Cross v5, 2015 Ritchey Road Logic, 1998 Specialized Rockhopper, 2017 Raleigh Grand Prix

Looks like a pretty standard Shimano style cartridge bottom bracket. You will need a tool to tighten it into the BB, can't tell what type from the City Grounds website as they only show the BB edge on, but I would guess it's this:

Park Tool Co. » BBT-22 : Bottom Bracket Tool : Bottom Bracket

Does this video help?

https://www.youtube.com/watch?v=_Kf-V5iulaU
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