e*thirteen XC BSA bottom bracket 68/73mm cupset

This is the thing to use if you have a 68mm BSA frame and want to use the Specialized s-works carbon mountain crank arms.

Bottom bracket weight is 81g:

Long term review

After 3 years of use (and over 16,000km) in the dirt and mud, the drive side bottom bracket bearings are now on the way out.  I have repacked the bearings with marine grade water resistant grease every year, but now the drive-side bearing is starting to feel rough.  I must say, I'm impressed with how long the bearings have lasted. 

Update - January 2016

e13 appear to have changed the design of these bottom bracket cups since the original set that I bought.  The bearings in the cups seem larger and the 30mm cranks spindle now runs directly on the inside of the bearing (without the black plastic spacers).  The outer seal now runs on the crank spindle as well.  Weight has also slightly increased to 84g.

Newer style e*thirteen (e13) 30mm bottom bracket cups

Related articles:

e*thirteen bottom bracket tool


Token Carbon Bottom Bracket

Vital stats:

Shimano BB-UN55 bottom bracket

There are fewer and fewer square taper bottom brackets available nowadays. The Shimano BB-UN55 is probably the best one Shimano still makes. It has a solid spindle and weighs 300g. It can be had for

Shimano SM51 Bottom Bracket

For use with Hollowtech MTB cranks. Total weight including 3 spacers 99g.

Shadow plus axle bracket unit alignment

The axle bracket unit can get easily bent out of shape along with your derailleur hanger.  If you have a derailleur hanger alignment tool, then you ...

Race Face Dues XC Crankset

175mm crank arms weigh 588g;

As an Amazon Associate I earn from qualifying purchases. If you purchase something from Amazon by following a link to Amazon from this site then I earn a commission on the purchase.

© 12 October 2013