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White Industries External BSA Bottom Bracket Black
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White Industries External BSA Bottom Bracket

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Threaded Convenience, White Industries Quality

White Industries external BSA style bottom brackets are made in their Petaluma, California shop with U.S. sourced 6061-T6 aluminum and feature Enduro stainless steel bearings. Offered with three different bearing sizes to help you fit your favorite crank to your favorite bike.

BSA bottom bracket shells and cups are referred to as "British" or "English" style and is the most common type of system found on modern bicycles. The "external" designation refers to the fact that the bearings will sit outboard of your frame's bottom bracket shell as opposed to being tucked inside the shell as you would find on some styles of BSA bottom brackets.


  • 30mm White Industries M/A/R/G cranks as well as other brands of 30mm spindle cranks
  • 29mm SRAM DUB cranks
  • 24mm Shimano HollowTech II cranks
  • Dust seals included with all models
  • Designed to be used on 68mm or 73mm wide bottom bracket shells

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

30mm Spindle - Black

Weight: 83 grams

Bottom Bracket STD: English (BSA) 

Mfg PartNum: BBE30BSABK 

29mm Sram Dub Spindle - Black

Weight: 90 grams

Bottom Bracket STD: English (BSA) 

Mfg PartNum: BBE29BSABK 

24mm Shimano Spindle - Black

Weight: 84 grams

Bottom Bracket STD: English (BSA) 

Mfg PartNum: BBE24BSABK 

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A guide to bottom bracket standards.

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