BELRI COURSE 85mm stem 21.9mm quill 25mm clamp front view
  • BELRI COURSE 85mm stem 21.9mm quill 25mm clamp front view
  • BELRI COURSE aluminium stem detail engraving
  • BELRI COURSE stem side profile showing 85mm extension
  • BELRI COURSE stem quill diameter 21.9mm close-up
  • BELRI COURSE stem 25mm handlebar clamp interior
  • BELRI COURSE stem made in France mark
  • BELRI COURSE stem on fork mockup vintage road bike
  • BELRI COURSE 85mm alloy stem top view
  • BELRI COURSE stem 21.9mm steerer insertion depth
  • BELRI COURSE stem underside clamp bolt detail
  • BELRI COURSE stem original finish patches and patina
  • BELRI COURSE 85mm stem mounted with drop bars vintage
  • BELRI COURSE stem full length scale reference

BELRI COURSE Stem 21.9-25-85 mm Vintage Bike Eroica PO21

BELLERI
BELRI COURSE aluminium stem: 85 mm reach, 21.9 mm quill, 25 mm clamp. French-made. Photographs form part of the description; minor storage marks may be visible.
€11.99
VAT included
Quantity
Last items in stock
1 Item

Description

French framebuilders of the late 70s and early 80s were exacting about stem dimensions. The BELRI COURSE quill stem answered with a 21.9 mm steerer fit, a 25 mm bar clamp, and an 85 mm forward reach—a combination found on countless Peugeot, Motobécane, and Gitane team bikes. Today, finding an original one in usable condition is a boon for any restoration.

The photographs on this page form part of the description and reflect the stem’s current condition; faint storage marks may be visible but no structural faults have been noted.

Period-Correct Geometry

The 85 mm reach sits between the ultra-short 60–70 mm stems often seen on city bikes and the longer 100 mm+ stems of full-on racing machines. It delivers a responsive front end without sacrificing too much comfort—ideal for a fast clubman’s road bike or a lightweight touring rig built to period spec. The quill diameter of 21.9 mm was standard on many French forks (look for the stamp on the steerer tube), while the 25 mm clamp fits classic drop bars from Mafac, Philippe, Guidons, or similar.

Technical Specifications

  • Stem length (in mm): 85
  • Ext. stem (in mm): 21,9
  • Int. stem (in mm): 25
  • Matter: Aluminium
  • Numéro de pièce fabricant: 0000
  • Pays d'origine: FRANCE

If you need a touch more reach for a larger frame, the same BELRI COURSE range includes a 90 mm version—see our listing for the Belri Course Stem 21.9-25 90 mm. For touring builds preferring a more upright position, the ATAX 22-25.4-95 mm Vintage Stem offers a different combination of extension and clamp size.


FAQ

What are the exact dimensions of the BELRI COURSE stem?

The stem has an 85 mm reach, a 21.9 mm quill (steerer) diameter, and a 25 mm handlebar clamp diameter.

Which bicycles originally used this stem?

It was typically found on French road bikes from the late 1970s and 1980s, such as Peugeot, Motobécane, and Gitane, that required a 21.9 mm quill and 25 mm bars.

What material is the stem made from?

It is made from aluminium, providing a good balance of stiffness and low weight.

Is this stem suitable for Eroica events?

Yes, it fits L'Eroica and other vintage cycling events as long as your bike uses the correct clamp and quill diameters.

What condition is this vintage stem in?

This is a used component; faint storage marks may be visible. The detailed photographs form part of the description and accurately represent the stem's condition.

Product Details
1 Item
Used

Data sheet

Stem length (mm)
85
Country of origin
FRANCE
Material
Aluminium
Stem ext. (mm)
21,9
Stem int. (mm)
25
Manufacturer part number
0000
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