Handlebar racing 410-25 mm vintage bike Eroica R251

A 410 millimetre racing bar with a 25 millimetre clamp section, coded R251. The dimensions are recorded as the governing facts: overall width, central clamp diameter. This is a used handlebar, so the photos are part of the description and carry the condition details.

Geometry that decides fit

410 mm across, 25 mm at the clamp. These two figures determine stem compatibility and shoulder width. Keep them as the first check before any other consideration. The clamp diameter is the harder constraint; a 25 mm stem will not take a 25.2 mm bar without force.

Condition and inspection

This is a second-hand part. Minor cosmetic wear may be present from storage. The photographs are a direct record of the surface, so they form part of the physical description of the bar. Read the images for oxidation, scratches, or bending; no major fault is declared unless it appears in the listing notes. The absence of a declared crack or rust spot means none is recorded.

For a period frameset around this bar, see the Motobecane 700C steel frameset, which also fits a restoration built around French-standard parts. A drivetrain from the same era, such as the Campagnolo Super Record rear derailleur, pairs well with a 410 mm bar for a complete cockpit and drivetrain package.