Information

This is one of the first products White Industries ever produced and remains a popular item all these years later! This is a BSA “square taper” style bottom bracket which uses BSA threads and a spindle that uses a square/tapered crank arm interface. It is compatible with White Industries ENO square taper and Road Square Taper cranks as well as other brands that use a J.I.S. (Japanese Industrial Standard) taper such as Shimano, Sugino, and others. These bottom brackets are not compatible with Campy cranks!

Specs

• 1.37” x 24 TPI threads
• Compatible with 68mm or 73mm bottom bracket shells (spindles are specific to shell width)
• Options include:
  • Stainless steel or Titanium spindles
  • 108mm, 113mm, or 121mm spindle lengths
  • 68mm and 73mm bottom bracket shell widths
  • 108mm spindles not available for 73mm BB shell widths
• Bearings
  • 2x Enduro ABEC 5 61903 LLB steel radial bearings
• Note! Titanium spindles flex more than stainless steel spindles and may require shorter service intervals to prevent creaking, especially for riders over 180lbs

Weights

Tools

• Cup tool
  • Park BBT-22 or BBT-32
  • Shimano TL-UN52 or TL-UN74-S
• Lockring tool
  • 6-notch 44mm inner diameter/41mm tooth diameter or a hook spanner
    • Pedro’s 6 notch “Shimano” spanner is a good one

Technical Documents

• Square Taper Bottom Bracket Installation
• Square Taper Crank Assembly
• Bottom Bracket Tool Compatibility