Free hub bearings

Peaky Rider

E*POWAH Master
Feb 9, 2019
849
544
Derbyshire Dales
The bearings in the freehub of my Trek Rail are running rough and annoying me ( I think Trek must fit the cheapest bearings they can source as I have had problems with others). Now I could buy a new freehub unit for £80 to £90 or I could replace the three bearings for £15 and as the freehub body is in perfect condition I've opted for the latter.

I am thinking that as these are very thin bearings (5 mm) they will be very difficult to press into position without the appropriate tool. I don't have such a tool but wonder, if I put the freehub body in the oven whilst my wife cooks Sunday lunch will this expand the metal sufficiently to increase tolerances slightly making it easier to fit the new bearings?

Any thoughts?
 

James_C

Well-known member
Nov 25, 2019
547
285
Kent, UK
I recently bought this or similar - loads on ebay.



It is worth it, it will pay for itself in bearings that dont get wrecked via poor install.

It makes pressing very easy and accurate. Comes with loads of different fittings for diff sizes.
 

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