SIMPLEX vintage gear shifters 1970 PX/PY 10 EROICA

A Period-Correct Cockpit Detail for 1970s Builds

The SIMPLEX name carries serious weight in the history of French drivetrain engineering. This set of gear shifters, marked PX/PY 10, belongs to that lineage. The markings place it firmly in the 1970s, a decade when friction shifting was the standard and riders expected a mechanical, direct feel from their levers. For a restoration that needs the right era-correct component, this is the kind of detail that completes a build.

What the Markings Tell You

The PX/PY 10 stamping identifies the configuration and model line. It is not a modern reproduction. The parts show the character of a component that has been used, stored, and preserved. Buyers looking for a clean, ready-to-ride component should study the photos closely. They are an integral part of the condition report for this used item. Minor cosmetic marks or storage wear may be present. No major defect is noted for this set.

For a matching French drivetrain, a set of MAILLARD COURSE freewheels from the same period makes a coherent pairing. The lever action on these SIMPLEX units was designed to pair with friction derailleurs, not indexed systems.

Integration with Vintage Shifters

These shifters mount directly to the down tube or stem, depending on the frame boss layout. The clamp diameter and thread pitch are not specified for this listing. If you are building a frame with period-correct bosses, this set is a strong candidate. For a complete approach to the cockpit, a correct handlebar matters too. Compare the AVA 400-25.4 mm handlebar, which represents the same era of French componentry.

Another SIMPLEX shifter set is also listed in this shop — worth checking if you need to compare markings or condition. See the other SIMPLEX vintage gear shifters here.