The next stage of his business plan was to move to Marseille where he learned how to manufacture steel tubes for bicycles.

[1] The following year, circa 1878, he moved to Paris and opened a cycle business, A. Clément & Cie, at 20 Rue Brunel near the Place de l'Etoile.

He also opened a sales showroom at 31 rue 'du 4-September', in Paris and started a poster advertising campaign, a new concept.

[1] By 1880 the "Clément" cycle manufacturing business at Rue Brunel, had circa 150 employees building bicycles.

[1][3][4] In 1896 Adolphe Clément who held the extremely profitable manufacturing rights for Dunlop tyres in France joined with a syndicate led by Dunlop's founder Harvey Du Cros to buy out the Gladiator Cycle Company and they merged it into a major bicycle manufacturing conglomerate of Clement, Gladiator & Humber & Co Limited.