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Bottom bracket standards

Written By: The Hive - Jeremy

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Difficulty

Moderate

Steps

Time Required

00:10:00

Tools

Caliper

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Parts

No parts specified.

Step 1 Bottom bracket standards

e*thirteen cranks utilize a 30mm aluminum spindle to maximize spindle stiffness

e*thirteen cranks utilize a 30mm aluminum spindle to maximize spindle stiffness
It is important to note that even though our cranks use a 30mm diameter spindle they are not on the BB30 standard and will not drop in to a BB30 frame. Our cranks use a wider spindle that allows the to fit in a variety of frames and as such they require wider bearings seats than BB30 cranks.
As a result e*thirteen cranks use proprietary bottom brackets in order to accommodate the larger spindle
We offer our BBs in four different common configurations
BSA threaded
PF30
BB30
BB89.5/92/107/121/132 (aka pressfit 41mm)

Step 2

There are two versions on BSA threaded BB, XC and DH

BSA threaded
There are two versions on BSA threaded BB, XC and DH
XC BBs work on XCX and TRS cranks and legacy 15.g cranks
DH BBs work on LG1 and legacy DH cranks and are slightly wider to help with guide fit
DH BBs also have longer thread skirts for better thread penetration to help deal with DH loads
The XC and DH BBs are not cross compatible, so you can not use an XC BB with an LG1 crank or vice versa

Step 3

PF30 BBs are for frames with 46mm bores where the BB is designed to press into the frame

PF30
PF30 BBs are for frames with 46mm bores where the BB is designed to press into the frame
Our PF30 BBs thread together in the center for ease of install and to ensure a tight fit
As always, double check with you frame manufacturer to make sure your frame is designed around the PF30 standard
PF30 BBs come with spacers to fit all cranks we make, XCX, TRS and LG1

Step 4

BB30 BBs are for frames with 42mm bores where the BB is designed to have the bearings press directly into the frame

BB30
BB30 BBs are for frames with 42mm bores where the BB is designed to have the bearings press directly into the frame
Our BB30 BBs thread together in the center for ease of install and to ensure a tight fit
Bearings will sit outside of the BB shell rather than inside in their normal position
As always, double check with you frame manufacturer to make sure your frame is designed around the BB30 standard
BB30 BBs come with spacers to fit all cranks we make, XCX, TRS and LG1

Step 5

BB 89.5/92 BBs are for frames with 41mm bores where the BB is designed to press into the frame

In BB89.5 and BB92 the number following "BB" refers to the shell width, spacers are included to fit multiple widths including 89.5mm, 92mm, 107mm, 121mm, 132mm

BB 89.5/92 (aka 41mm pressfit)
BB 89.5/92 BBs are for frames with 41mm bores where the BB is designed to press into the frame
In BB89.5 and BB92 the number following "BB" refers to the shell width, spacers are included to fit multiple widths including 89.5mm, 92mm, 107mm, 121mm, 132mm
BB89.5/92 require a bearing press for install
As always, double check with you frame manufacturer to make sure your frame is designed around the BB89.5 or BB92 standard
BB89.5/92 BBs come with spacers to fit all cranks we make, XCX, TRS and LG1