Jul 23, 20202 min read

Bearing Sizes: Cube Stereo 140 HPA SL 27.5 2017

Updated: Jan 22, 2023

Bearing sizes can be a bit of a pain to get hold of at the best of times and with the wide array of customisation you can find with pushbikes it is a bit of a mine field. Most component specs for the Cube Stereo 140 HPA SL 27.5 can be found here, but when you get down to the nitty gritty the specs can be hard to find.

For this reason it is good practice to document the part numbers as and when you service your bike so that it is plain sailing for the future. In this article we are sharing info we have gathered on the Cube Stereo 140 HPA SL 27.5 2017 enduro full suspension mountain bike.

It goes without saying that you should treat this information with a dash of caution, as Cube may have changed various specs throughout the production run of the 2017 model, and the part numbers may not directly translate to other years of the same bike, however it should give you a starter for 10.

Headset bearings

The headset bearings in a pushbike are subject to radial and axial loads and therefore are normally taper bearings, you can find more info about bearing types and part numbering here!

The part numbers recorded from the OD of the upper and lower headset bearings are as follows:

Upper: TH MR0401-1/8 36 45 (TH-873E 1.1/8").
Lower: TH MR127 1.5 36x45 (TH-073E ACB 1.5).

The FSA headset assembly this bike is spec'd with doesn't seal too well and so when installing remember to apply plenty of grease, this will reduce water and dirt ingress and increase bearing life as explained here.

Wheel Bearings

The most common wheel bearings for most bikes are 6902-2RS, 6903-2RS & 6904-2RS. These are standard radial deep groove sealed roller bearings which can be picked up from hardware stores such as RS Components or Simply Bearings.

Front Wheel Bearings

6902-2RS x2

Rear Wheel Bearings

6902-2RS x2

Free Hub Bearings

6802-2RS x2

Bottom Bracket

There are two main types of bottom bracket, push fit and threaded type. The Cube Stereo 140 HPA 27.5 2017 model comes with a push fit BB92 from RaceFace.

The part marking on the BB is as follows: 41mm PRESS FIT BB FOR BB107 BB92 BB89.5 BB86.5

Normally the full assembly is available from shops such as Chain Reaction Cycles or Tredz.

Frame Bearings

The frame bearings are on the most part smaller than the wheel hub bearings however they are still standard deep groove radial roller bearings with rubber seals, which again can be purchased from hardware stores such as RS Components or from popular bike shops such as Wiggle.