Promax SC-1 Square Taper JIS Chromoly Bottom Bracket (Black) (BSA) (113mm)

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Promax SC-1 Bottom Brackets are the perfect choice for those who still prefer the low weight and simplicity of square taper cranks. Each bottom bracket is hand assembled using a hollow chromoly spindle, precision sealed bearings, forged and CNC-machined alloy cups and a composite center spacer/seal.


  • Hollow chromoly spindle
  • CNC-machined alloy cups
  • JIS square taper

Frame Interface: BSA/English Threaded
Spindle Interface: Square Taper JIS
Bottom Bracket Shell ID: 1.37
Shell Width: 68mm
Spindle Lengths: 108mm or 113mm
Color: Black
Weight: 246g (108mm)

This product was added to our catalog on February 24, 2020