🚴 About This Component

A genuinely scarce and technically interesting vintage front derailleur.

This Simplex SGDG front derailleur features the rare bottom pull configuration combined with telescopic actuation, a design detail that set Simplex apart during the golden era of French component innovation.

Built for classic road setups, this derailleur is increasingly difficult to source — particularly in complete, functional condition. A strong choice for period-correct restorations, historically accurate builds, or collectors seeking distinctive mechanical solutions from mid-century cycling design.

⚙️ Technical Highlights

Model: SGDG
Front derailleur
Bottom pull cable routing (rare)
Telescopic actuation mechanism
Traditional clamp-on design
Original Simplex branding visible

🧰 Condition Report

Good vintage condition
Fully functional mechanical action
Visible cosmetic wear and patina consistent with age
Surface marks and light oxidation present
No cracks or structural damage

This component has not been over-restored, preserving originality and mechanical integrity.

⭐ Why This Derailleur Is Desirable

Genuine Simplex SGDG model
Rare bottom pull configuration
Uncommon telescopic actuation system
Increasingly difficult to find complete
Strong appeal to collectors and restorers

💌 Personal Note from Sorcha Rosa

This is the kind of component I love most — clever, slightly unconventional, and unapologetically of its time. The telescopic action is a small detail, but it says so much about how inventive cycling engineering once was. A real joy for the right build 🤍
— Sorcha Rosa

classic bike parts

Simplex SGDG Front Derailleur | Rare Bottom Pull | Telescopic Actuation | Vintage Road