White Industries T47 Bottom Bracket

T47 is a bottom bracket standard that White Industries helped develop in 2016. The “T” stands for “threaded” and the “47” is the approximate outside thread diameter of the cup. T47 bottom bracket cups are not compatible with the much smaller BSA threaded BB shells.

The “External” designation on this bottom bracket refers to the fact that the bearings sit “outboard” the BB shell as opposed to “inboard” of the BB shell as they do on our “internal” T47 bottom brackets.

White Industries bottom brackets are made here in our shop with U.S. sourced 6061-T6 aluminum and feature Enduro stainless steel bearings as well as a ceramic bearing upgrade option where possible. We offer a wide variety of styles and colors to help you fit your favorite crank to your favorite T47 style bike.

47mm x 1mm threads
Only available in black.

Available to fit the following cranks:
White Industries MR30 cranks/Etc (30mm spindle)
SRAM BB30/PF30 (short 30mm spindle)
SRAM DUB (29mm spindle)
SRAM GXP (22mm/24mm stepped spindle)
Shimano HollowTech II (24mm spindle)

Also available with XD Ceramic Bearings (+$150.00) and an optional spacer it ($30)

Internal T47 BB Model	Tool	Spindle Diameter	Fits Cranks	Outside to Outside Bearing Width on BB Shells		Enduro Stainless Steel Bearing		Enduro XD-15 Ceramic Bearing
				68mm/73mm	86mm/92mm	L	R	L	R
BBI306873T47	Park BBT-47	(Short spindle) 30mm	White Industries MR30 Etc.	68mm/73mm	91mm/96mm	6806	6806	6806XD	6806XD
BBI308692T47	Park BBT-47	(Long spindle) 30mm	White Industries MR30 Etc.	68mm/73mm	91mm/96mm	6806	6806	6806XD	6806XD
BBI29T47	Park BBT-47	29mm	SRAM DUB	68mm/73mm	91mm/96mm	6806/29	6806/29	N/A	N/A
BBI24T47	Park BBT-47	24mm	Shimano HollowTech II Etc.	68mm/73mm	91mm/96mm	2437	2437	2437XD	2437XD
BBI22T47	Park BBT-47	22mm/24mm stepped	SRAM GXP	68mm/73mm	91mm/96mm	22378	2437	N/A	2437XD

 

External T47 BB Model	Tool	Spindle Diameter	Fits Cranks	Outside to Outside Bearing Width on 68mm/73mm BB Shells		Enduro Stainless Steel Bearing		Enduro XD-15 Ceramic Bearing
						L	R	L	R
BBE30T47	Park BBT-79	(Short spindle) 30mm	White Industries MR30 Etc.	91mm/96mm		6806	6806	6806XD	6806XD
BBE29T47	Park BBT-79	29mm	SRAM DUB	91mm/96mm		6806/29	6806/29	N/A	N/A
BBE24T47	Park BBT-69	24mm	Shimano HollowTech II Etc.	91mm/96mm		2437	2437	2437XD	2437XD
BBE22T47	Park BBT-69	22mm/24mm stepped	SRAM GXP	91mm/96mm		22378	2437	N/A	2437XD