The splined ISIS standard for cranks and bottom brackets (BBs) didn’t last long before external bearing cranks appeared. The BBs themselves generally didn’t last long either.
One of the few with a decent reputation for longevity (alongside the discontinued SKF) was this top-line unit from Race Face.
The drilled, machined and heat-treated chromoly axle is a tight squeeze to ﬁt but super-secure once set up. Eight independent seals keep the crap out and the same unit will ﬁt either 68mm or 73mm shells.
|Name||Name, 0, 10, Name, Signature XS ISIS BB|
|Brand||Brand, 0, 20, Brand, Race Face|
|Weight (g)||Weight (g), 2, 0, Weight (g), 224|
|Features||Features, 2, 0, Features, 107-127mm axle|
|Available Colours||Available Colours, 2, 0, Available Colours, Gold|
|Material||Material, 2, 0, Material, Aluminium Chromoly Steel CNC Machined Nickel|
|Fits Shell Width||Fits Shell Width, 2, 0, Fits Shell Width, 68mm 73mm|
|Bottom bracket - crank arms connection||Bottom bracket - crank arms connection, 2, 0, Bottom bracket - crank arms connection, ISIS Drive|