Handlebar Stems 26.0mm Clamp Diameter

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

PLEASE NOTE I have reorganised this page putting all the 3TTT stems in one section in order to make it easier for you to find what you are looking for. Theresult is that many stems have been given new product numbers – do not worry that the number in the photo does not match that of the description, the stem will be the same one as in the photo…

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

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

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

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

3TTT STEMS 26.0mm clamp diameter
6–10cm long

ST31 3TTT BLACK 8cm 26.0mm clamp diameter Anodising generally excellent apart from insertion mark, slight corrosion to fittings £28


ST39 3TTT 9.5cm 26.0mm clamp diameter Very good £24


ST42 3TTT BRONZE ANODISED 10cm Excellent a few small marks, no plug £30



3TTT STEMS 26.0mm clamp diameter
10.5cm–12cm long

ST44A 3TTT ENGRAVED F MOSER 12cm 26.0mm clamp diameter Excellent some anodising loss on insertion of quill and few small marks £55


ST53 3TTT 11.5cm 26.0mm clamp diameter Very good to excellent £25


ST53A 3TTT 11.5cm 26.0mm clamp diameter Good small bruise on right hand side of extension £17


ST60 3TTT BLACK 11cm Excellent but missing plug £26




ST63A 3TTT 12cm BRONZE ANODISING Excellent £33


ST64A 3TTT 12cm Excellent apart from small mark to front of clamp £27



3TTT STEMS 26.0mm clamp diameter
12.5cm and longer

ST34 3TTT 13cm Very good £21


ST67 3TTT 13cm some small marks and scarring to top of clamp £23


OTHER MAKES OF STEMS 26.0mm Clamp diameter

Sorry none at present



OTHER MAKES OF STEMS 26.0mm Clamp diameter

ST59 MODOLO 12cm 26.0mm clamp diameter ** New Old Stock** £39


ST62 FIAMME MONTREAL 11cm 1970s rare stem Excellent £35


ST64 FIAMME MONTREAL 11cm 1970s needs very good polish but a rare stem £16


ST87 ITM BLACK FONTANA ENGRAVED 11.5cm 26.0mm clamp diameter Excellent £49



OTHER MAKES OF STEMS 26.0mm Clamp diameter
12.5cm and longer

ST66 SIGMA/VENOM STEEL 12.5cm no plug very light with ultra short expander bolt Excellent looks unused £34


ST95 MODOLO 12.5cm STEM with two part clamp Excellent almost unused £33


ST96 ITM BLACK GEOFFREY BUTLER ENGRAVED 13cm excellent couple of small marks £33

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.

Click sale images to
enlarge the picture.
property of hilary stone