Riders with a threaded frame who want to fit a 30 mm spindle crank with enough spindle length.
Plenty of the best cranks now use a 30 mm spindle, and plenty of great frames still use a BSA threaded shell. This bottom bracket from Wheels Manufacturing is the bridge between them, with machined aluminium cups that thread straight into a standard English threaded frame.
The cups carry Enduro 6806 ABEC-3 sealed bearings outboard of the shell, and the whole unit is fully serviceable, so a worn bearing is a quick swap rather than a new bottom bracket.
There is one catch worth knowing up front: your crank spindle has to be long enough. In a 68 mm shell it needs to measure at least 104 mm with all spacers and adjusters removed, and standard BB30 cranksets will not work.
Threaded reliability
Threads into a standard BSA shell, so no press-fit creaks.
30 mm spindle support
Designed for 30 mm diameter crank spindles.
Enduro bearings
6806 ABEC-3 sealed bearings, outboard of the shell.
Serviceable
Replace the bearings, not the whole unit.
Fit
Build
Outboard Enduro bearings
Enduro 6806 ABEC-3 sealed bearings sit outside the shell, giving a wide, stable stance for the 30 mm spindle.
Great for
Maybe not for
Needs a 30 mm crank with a spindle length of at least 104 mm in a 68 mm shell. Measure from the inside face of the crank arm to the end of the spindle with all spacers and adjusters removed.
Measure before you buy
Pull the crank, strip every spacer and preload adjuster off the spindle, and measure from the inside face of the arm to the spindle end. Under 104 mm for a 68 mm shell and this will not fit. Not sure? Bring the crank in and we will measure it for you.
Bottom brackets and small parts machined in the USA.
Wheels Manufacturing is an American component maker best known for its bottom brackets, adapters and derailleur hangers. Its thread-together bottom brackets are machined in the USA and use Enduro sealed bearings.
