What does that "LL" mean, stamped (along with the length) on my Mountain Bike's Shimano BB spindle?

  • 1
    It's not immediately obvious to me. Any chance you can post a photo? – PeteH Jul 20 '14 at 19:53
  • Sheldon Brown has a very comprehensive page on bottom brackets but no explanation as to what the LL refers to and given its context it does not seem that obvious either. I am guessing here but it maybe a contraction for overall length given its usage. – Aushiker Jul 21 '14 at 9:10

I don't know anything about bottom brackets, but I found this document which says (on page 16):

Shimano cartidge-bearing bottom-bracket spindles are marked with letter codes that correspond to different length spindles. These codes and the corresponding spindle lengths are:

Code Length

MM 107mm and 110.5mm

LL 113mm

D-H 115mm

YL 116mm

XL 118mm

ZL 121mm

NL 122.5mm

EL 127.5mm

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