Information

Product Details

This is one of the first products White Industries ever produced way back in 1988. We’ve updated the design along the way and it remains a popular item all these years later despite the introduction of more “modern” crank and bottom bracket designs.  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 which use an ISO or “Campy” style taper.

Specs

• 1.37” x 24 TPI threads
• Compatible with 68mm or 73mm bottom bracket shells (spindles are specific to shell width)
• Spindle has “shoulders” machined into it to which the bearings seat against
• “Symmetric” design with equal length on both sides
  • Not laterally adjustable
• Bearing preload set via the adjustable non-drive side cup and  lockring
• Thread depth
  • 12.4mm
• 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
  • There are no “external” seals on this bottom bracket, only the seals built into the bearings
• Weights
  • 108mm: 207g/SS and 142g /Ti
  • 113mm: 214g/SS and 149g/Ti
  • 121mm: 227g/SS and 156g/Ti
• Internal BB sleeve part #BBSLV17 available under Parts>Bottom Bracket Parts
  • Helps keep debris from getting to the insides of the bottom bracket bearings

Compatibility

• Designed to be used on threaded BSA 68mm or 73mm wide bottom bracket shells (spindles are specific to shell width)
• J.I.S. (Japanese Industrial Standard) crank tapers
  • Not compatible with Campy cranks which use an ISO or “Campy” style taper
• Note! Titanium spindles flex more than stainless steel spindles and may require shorter service intervals to prevent creaking, especially for riders over 180lbs
• Internal BB sleeve part #BBSLV17 available under Parts>Bottom Bracket Parts
• Tools: see the Bottom Bracket Tool Compatibility document

What’s In The Box

• Non-drive side adjustable cup with lockring, bearing installed
• Drive-side fixed cup, bearing installed
• Stainless steel or titanium spindle
• Sleeve not included (not currently available)
  • BB sleeve part #BBSLV17 available under Parts>Bottom Bracket Parts

Technical Documents

• MR30 Crank and Bottom Bracket Compatibility Chart
• Bottom Bracket Tool Compatibility
• MR30 Crank Assembly