Vintage aluminium touring bicycle handlebar - 25mm 390mm GUID R560

Aluminium touring bicycle handlebar with a 25 mm clamp diameter and 390 mm width. The GUID R560 profile places this bar among the practical shapes used on period touring bicycles. The dimensions are taken from the actual part, not a catalogue reference, so they reflect what you will receive.

Fitment Dimensions for a Touring Bicycle Cockpit

Two numbers matter most here. The 25 mm clamp sets the stem compatibility. The 390 mm width defines the rider’s hand position. Both values are specific to this example, and a mismatch further down the cockpit is a common source of delay in a build. Check the stem clamp diameter before committing the bar to a frame.

Aluminium keeps the assembly light and resists the kind of surface corrosion that older steel bars can develop in certain storage environments. This example is a used component. The images in the listing are treated as a direct record of its visual condition, and any significant defect noted in the source description carries the same weight as a written specification.

Period Cockpit Geometry

A 25 mm clamp is a recurring dimension across many vintage road and touring bicycles. This particular bar is profiled for a touring position — a shape that places a premium on sustained comfort rather than a low, aggressive stance. The width is moderate, and the bend family it belongs to is frequently seen on European frames from the classic era.

If you are working through the cockpit of a period touring machine, the Philippe Franco-Italia Aluminium Handlebar offers a related shape with a slightly different clamp dimension. For a bar that shares a similar width range but comes from the racing side of the catalogue, the 390 mm racing handlebar is worth comparing.

What the GUID R560 Designation Tells You

GUID appears as a maker’s or pattern designation on these bars. The R560 suffix operates as a place-of-stock reference for the seller, not as a model code printed on the component itself. The critical identification for a buyer is therefore the measurable geometry: 25 mm and 390 mm, in aluminium, with a touring bend.

The overall profile prioritises a natural wrist angle over the course of a long day. Because the clamp zone is an unthreaded cylindrical section, the bar does not require a specific thread standard, but it does require an exact diametric match at the stem.