This ATAX unit keeps the correct proportions for that generation of bicycles: an 85 mm length, a 22 mm steerer insert and a 25.4 mm handlebar clamp. Aluminium construction, French origin, undisturbed by the plating and polishing of later decades.
Fit and measurement logic
Quill stems are dimensioned against two bores that must both match the frame and the handlebar. Here the 22 mm steerer tube sits inside the fork column, while the 25.4 mm clamp grips a period-correct handlebar. The 85 mm reach is short by modern road standards — and that is exactly the geometry early touring frames were drawn around.
Condition and photography
This is a used part. Photographs form an integral part of the description and record the item's actual state; minor cosmetic marks or traces of wear from long storage are normal on a component of this age. Any major issue is flagged in the written description. When the original notes mention excellent condition, that assessment is carried over verbatim here — nothing is added or softened.
Key specifications
- Stem length (mm): 85
- Outer stem diameter (mm): 22
- Inner stem diameter (mm): 25.4
- Material: Aluminium
- Manufacturer part number: 0000
- Country of origin: France
Working through a cockpit rebuild
Stems of this family were fitted alongside steel handlebars, cable runs and brake levers of the same era. Installations here are straightforward: undo the expander wedge, check the fork column for scoring, dry-fit the bar in the clamp before final tightening. Torque figures are not provided with the part — the correct value is the one specified by your handlebar or fork manufacturer.
Other French quill stems in the same steerer and clamp range are catalogued in our spare parts section.
- Stem length (in mm): 75
- Ext. stem (in mm): 22
- Int. stem (in mm): 25.2
- Matter: Aluminium
- Numéro de pièce fabricant: 0000
- Pays d'origine: FRANCE
FAQ
What handlebar clamp diameter does this ATAX stem use?
The inner stem diameter is 25.4 mm, which matches the clamp bore used by period-correct handlebars of the same era. Check your bar's measured diameter before fitting.
How long is the ATAX quill stem?
The stem length is 85 mm. The outer diameter is 22 mm for the steerer insert, which is a common French fork column size.
Is this ATAX stem made of aluminium?
Yes. The material is aluminium, as listed in the technical specifications. The country of origin is France.
Are the photos part of the product description?
Yes, the photographs are an integral part of the description and show the stem's actual condition. Minor cosmetic marks or traces of long storage are normal on a used part; any major issue is stated in the written description.
