White Industries External BSA Bottom Brackets

White Industries External BSA Bottom Bracket
*See note at bottom regarding 29mm.
White Industries external BSA style bottom brackets are made here in our shop and feature Enduro stainless steel angular contact bearings or optional Enduro XD-15 ceramic-hybrid radial bearings. We offer them with three different bearing sizes to help you fit your favorite crank to your favorite bike.
BSA bottom bracket shells and cups are named after the Birmingham Small Arms Company which created the thread standard used in this system. Its also 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 frames bottom bracket shell as opposed to being tucked inside the shell as you would find on some styles of BSA bottom brackets.

1.37 x 24 TPI threads (BSA threads)
Designed to be used on 68mm or 73mm wide bottom bracket shells
Enduro stainless steel angular contact bearings

Enduro XD15 ceramic-hybrid bearings optional

Weight/pr (with bearings and seals)

30mm: 83g
29mm: 90g
24mm: 84g

Cup widths (external section of each cup, including seal)

24mm: 10.5mm
29mm: 11.5mm
30mm: 11.5mm

Thread depths

24mm: 11mm
29mm: 13mm
30mm: 13mm

Bearings

24mm: Enduro SMRA 2437 LLB or CXD MR 2437 LLB
29mm: Enduro S71806/29 LLB or CXD 6806/29 LLB
30mm: Enduro S71806 LLB or CXD 6806 LLB

Torque: 26-37 ft lbs (35-50 Nm)
Tools: 12 notch/46mm

Park BBT-79 to BBT-79.3
Abbey BSA30
Enduro BBT-015
Race Face Cinch spanner

Anodized with machine engraved logos
Available in black, blue, gold, pink, purple, polished silver, red

*SRAM DUB spacers will not work with our 29mm BBs. You will need a 29mm Spindle Spacer Kit