Box Two Bottom Bracket Square-Taper Chromoly - boxcomponents

Box Two Bottom Bracket Square-Taper Chromoly

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Box Two™ Square Taper Cromo Bottom Brackets are the best option for young BMX racers and other users of three-piece cranks in search of an affordable, high-performance square taper bottom bracket. Each bottom bracket is hand assembled with a chromoly spindle, sealed bearings, forged and CNC-machined alloy cups and a composite center spacer/seal.


Spindle Type JIS
Spindle Material Chromoly
Spindle Length 108mm or 113mm
Shell Width 68mm
Thread 1.37" x 24 TPI
Weight [108] TBD
Weight [113] TBD



The following tools can be used to install/remove this bottom bracket:

  • Park Tools BBT-22
  • Park Tools BBT-32
  • Pedro's Splined Bottom Bracket Socket