For the 1989 edition of the Tour de France, Castelli had the Italian pop painter and sculptor Mario Schifano design the official Tour leader jerseys.

Greg Lemond won the Maillot Jaune in what many consider the greatest Tour ever when he beat Laurent Fignon by 8 seconds in the final stage.⁣

The race had everything – a brilliant route, drama, attacking riding, and an unpredictable two-way battle which swung backward and forwards from the Grand Départ in Luxembourg, all the way to the final meters of the Champs Elysées. Greg LeMond’s final eight-second victory over Laurent Fignon remains the closest margin in the event’s history.⁣

Irishman Sean Kelly, the great sprinter, and classics rider won the Maillot Vert – one of five Green jerseys he won during his career.⁣ ⁣

The Dutchman Gert Jan Theunisse of Team PDM won the Mountain Jersey.⁣

The strength of the PDM team was reflected by not only winning the team classification and having four cyclists in the top ten of the GC, but also by winning four of the five secondary individual classifications:⁣

Sean Kelly won both the points and intermediate sprints classifications, Gert Jan Theunissen won the mountains classification, and Steven Rooks won the combination classification.⁣