N.O.S. Comotor GS Birotor

Unique Time Capsule: 1974 NOS Comotor Type 624 Wankel Engine & C-Matic Gearbox

An untouched piece of automotive heritage for the dedicated Citroën GS Birotor collector

We are proud to offer an exceptionally rare piece of engineering history: an unused, original New Old Stock (NOS) Comotor Type 624 Wankel rotary engine (No. 02176). Complete with its matching 3-speed C-Matic transmission (No. 001196), Solex 32 EEIT carburettor, starter motor, ignition system and intact factory seals.

Key Features & Provenance

• Original Factory Condition: Still housed in its original PSA transport crate, complete with internal protective materials, inspection documents and historical shipping labels.

• Officially Certified: Written confirmation from L’Aventure Peugeot Citroën DS (Centre d’Archives de Terre Blanche) establishes that it was officially produced in June/July 1974.

• Never Installed: Supplied directly from the Aulnay-sous-Bois factory to a French educational institution and preserved ever since in perfect, unused condition.

• Dual Historical Significance: Developed specifically for the Citroën GS Birotor (1973–1975) and also used in the legendary Van Veen OCR 1000 motorcycle (1977–1981).

The offering includes an extensive 56-page Private Archival Edition documentation dossier. This is far more than a spare part: it is a certified historical artefact worthy of a museum. The ultimate mechanical safeguard for a rare classic or a unique centrepiece in a prestigious collection.

Documentation & inspection upon request.