3TTT Pantographed Stem COLNAGO 90-22.2-26 mm vintage bike PO33

A quill stem is one of the few components that tells you instantly what a build is. This one carries 3TTT's pantographed Colnago marking — the kind of detail that sits at the centre of the cockpit and does the talking for the whole bike. It measures 90 mm in length, with a 22.2 mm quill and a 26 mm clamp, and it is made of aluminium in Italy.

Condition: no oxidation. As with any used component from a long-stored collection, minor cosmetic traces or micro-scratches linked to storage may be present; the photos are part of the description.

What this 3TTT stem brings to a classic build

Three numbers decide whether a quill stem belongs on your frame. The 22.2 mm quill diameter is the classic standard for French and older steel steerer tubes — it is the measurement to check first, ideally with a caliper, before you commit. The 26 mm clamp matches a 26 mm handlebar centre, the common pairing on vintage road and racing cockpits. The 90 mm extension is a middle-of-the-road reach: long enough to open up the position on a racing frame, short enough to keep a touring bike comfortable over distance. If you are building a randonneur or touring machine with a 22.2 mm steerer, this is the kind of quill that fits the period without looking out of place.

Key specifications

• Stem length: 90 mm
• Quill diameter (external): 22.2 mm
• Clamp diameter (internal): 26 mm
• Material: Aluminium
• Country of origin: Italy
• Oxidation: No
• Manufacturer part number: 0000

Fitting it to your cockpit

Choose the handlebar first — a 26 mm centre is what this clamp is built around. A period steel drop bar such as the 400-25.2 mm handlebar for touring and racing builds (R432) is a natural companion, though always confirm your own bar's clamp dimension before ordering.

Check your steerer before you buy: a 22.2 mm quill will not seat in a 22.0 mm or 25.4 mm tube, and there is no way around that with a quill stem. Calipers make the job quick, and it saves you the disappointment of a stem that almost fits. And when it comes to restoration projects, this Colnago-pantographed 3TTT stem is exactly the sort of piece that finishes a build rather than just completing it.