For a completely thorough explanation of bottom brackets and what they look like, please see this great link at the Park Tool website: BOTTOM BRACKET IDENTIFICATION
They do a great job breaking it all down.
30mm Spindle Cranks
For our purposes, what you need to know is that most e*thirteen cranks use 30mm aluminum spindles, and we support the following standards with our own bottom brackets:
- BSA - 68mm / 73mm / 83mm / 100mm
- PF30 - AKA Press-fit 30
- T47 - essentially a threaded PF30 shell
e*thirteen cranks are likely compatible with other bottom brackets using 30mm bearings, but it may require special spacing to make it work!
24mm Spindle Cranks
A few e*thirteen cranks now also use 24mm steel spindles, found as stock equipment on many fine bicycle brands. e*thirteen makes replacement bottom brackets for all applications of these cranks.
Or click below to download the PDF