Vintage Plastic Double Cable Guide for Bicycles — Eroica Style (GC6)

Routing two cables under a bottom bracket shell often turns into a lesson in friction. This GC6 guide keeps them separated and aligned, so the rear brake and derailleur cables run without sawing into each other or the shell. The moulded plastic body is light, and it sits firmly against the frame boss once the fixing bolt is torqued.

What matters on a cable guide of this era

The useful detail here is the double channel: one path per cable, no crossing, no pinch points. On bikes where the under-shell clearance is already tight, that separation prevents the inner wires from binding mid-shift. The part carries no major damage beyond the usual light storage marks that a component of this age can accumulate.

Key specifications

• Material: Plastic
• Manufacturer part number: 0000
• Country of origin: France

If you are checking cable guides for a build, the GC4 version for touring bikes uses the same two-cable principle in another small plastic body. For a different approach, the Vitus Dépose cable guide shows what the French makers were fitting to their period road frames.