Technical & Reference Section > Tech and Restoration

Stem shaft diameters?

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Evolution:
How many different stem shaft diameters are there? I have a Streetbeat F&F, as my first build, along with a stem with a 22.2mm shaft that does not fit into the forks. What other  sizes are there or which stem do I need.

Thanks in advance for any help.

David.

fouronethreeoh!:
Generally i think most old school stems are 21 mm diameter.

Yep, just measured an old suntour stem, 21 mm shaft.  :daumenhoch:

OrgasmDonor:
as above, but, some early midschool stems seemed to be that bit wider, dyno stems for one can be 21mm or 22.2 :daumenhoch:

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