Sachs Huret Duopar - eco derailleur

Sachs Huret Duopar - Eco derailleur: a vintage cycling icon

Where mechanical elegance meets retro performance

In the world of vintage cycling, a few mechanical components have achieved legendary status. The Sachs Huret Duopar - Eco derailleur is one such gem. Praised for its reliability, clever engineering, and unmistakably retro design, this derailleur is a testament to a time when bikes were built with both passion and precision.

A technical signature by Huret

Originally developed by Huret, a French pioneer in gear systems, the Duopar first emerged in the late 1970s, just before the brand was acquired by Sachs. The Duopar - Eco version was introduced as a more accessible alternative to the original Duopar, retaining the system's most important innovation: a double parallelogram mechanism, which provides consistent chain tension—even on wide-range freewheels.

It features a long cage arm, designed to accommodate wide gear ratios, making it perfect for touring setups and randonneur bikes with triple chainrings and generous climbing gears.

Key features of the Duopar - Eco

• Type: rear cable-actuated derailleur

• Mounting: hanger-style (standard on most steel frames from the '70s and '80s)

• Compatibility: supports up to 6 or 7-speed freewheels

• Total capacity: around 38 teeth—ideal for triple cranksets

• Materials: mix of lightweight alloy and chromed steel, with brass or steel fasteners

• Standout feature: dual parallelogram linkage for smooth and consistent shifting

While it was marketed as a budget-friendly option compared to the lighter Duopar SL, the Eco version still delivers dependable performance and has become a favorite among vintage bike restoration enthusiasts.

A must-have for classic bike lovers

Restoring an old Peugeot tourer, a Motobécane Grand Touring, or a Gitane Interclub? The Sachs Huret Duopar - Eco derailleur is a perfect match if you want to stay true to the period style while ensuring smooth, reliable gear changes.

Its design is another reason for its popularity: the elegantly shaped cage, engraved "Sachs Huret" branding, and polished (or patinated) finish bring authenticity and charm to any vintage build.

In a nutshell

The Sachs Huret Duopar - Eco derailleur is more than just a component—it's a piece of cycling history. Sought after for both its mechanical prowess and old-school charm, it perfectly embodies the golden era of French bicycle craftsmanship. Whether you're a collector, a passionate restorer, or simply a fan of classic gear systems, this derailleur deserves a place on your vintage ride.