Technical & Reference Section > Tech and Restoration

Stem Shafts Sizes ?

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brass monkey!:
thanks Gents, I have learnt something today !  :)

animal:
I to have had this problem, tuff neck stem was tight in landing gear forks but lose in my MRD forks, cut up a carling can and used in as a shim  :LolLolLolLol: Didn't realise there are different sizes, just thought MRD forks were a duff size as had the same problem bitd. Does that mean all stems come in a metric and imperial fitment?

login_user:

--- Quote from: S&MAlex on June 28, 2007, 12:58 PM ---There are 2 main shafted stem sizes.

BMX (USA)          21.1mm
"MTB" (Euro?)    22.2mm

Most shafted BMX stems are 21.1mm but some BMX style stems are/were avalable in 22.2 (ie Sugino and SR).

Hope that helps.


--- End quote ---

Fook  :tickedoff: i've got one of those bigger Sr stems and its fooking useless.  :rant:

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