Description
🚴 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
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Model: SGDG
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Front derailleur
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Bottom pull cable routing (rare)
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Telescopic actuation mechanism
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Traditional clamp-on design
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Original Simplex branding visible
🧰 Condition Report
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Good vintage condition
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Fully functional mechanical action
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Visible cosmetic wear and patina consistent with age
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Surface marks and light oxidation present
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No cracks or structural damage
This component has not been over-restored, preserving originality and mechanical integrity.
⭐ Why This Derailleur Is Desirable
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Genuine Simplex SGDG model
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Rare bottom pull configuration
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Uncommon telescopic actuation system
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Increasingly difficult to find complete
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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
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