Handlebar Stems

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25.4mm clamp diameter (look below!)
26.0mm clamp diameter
26.4mm clamp diameter

Quill stems come with different clamp diameters and occasionally different quill diameters.

Common clamp diameters are 26.4mm (most Cinelli pre-1995), 26.0mm (3TTT, Mavic, some ITM, some Nitto) and 25.4mm (SR, GB, some Nitto and ITM)

I personally think you can use Cinelli stems with 26.0mm clamp bars but the official recommendation is that 26.4mm stems should be used with 26.4mm bars and 26.0mm stems should be used with 26.0mm bars.

We measure stems centre to centre across the top – this does not always correspond with the manufascturer's markings.

Please contact me at: hilarystone@hilarystone.com to check on availability and confirm shipping cost.

STEMS with 25.4mm Clamp diameter

See also the Classic Corner handlebars/stems page for more 25.4mm stems

ST1A GB RTE 9.5cm as fitted to Moulton AMs Very good missing RTE circlip £20


ST10 SR FORGED 10cm Excellent almost unused £21


ST10A SR FORGED 10cm Raleigh branded Excellent a few small marks £18


ST11 SR CAST 8cm Very good to excellent £12


ST11C SR CAST 8cm Very good insertion mark £12


ST15 SR CUSTOM 8cm Very good to excellent £14


ST18 SR FX 8.5cm Some scratches on top £12


25.4mm CLAMP STEMS with FRENCH (22.0mm) dimensioned QUILL

ST21 ATAX 7.5cm with built-in shifter mounts 22.0cm quill (French) Excellent £34

Shipping costs:

UK: £4
Europe: £8
North America: £10
Worldwide: £14

The figures above are
estimates,rates may change in
special circimstances.
Contact us for more info.

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