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 Yamaha - 600 XJ S / N Diversion
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Yamaha XJ  S / N Diversion motocyclette motorrad motorcycle vintage classic classique scooter roller moto scooter
Photo ou archives : F-M. Dumas

Capacity : 600
Model : XJ S / N Diversion
Production : 1991 - 1998
Category : (R) Street Bike


XJ600S  Seca II (US), Diversion (EU) - 1991

A safe choice


Having struggled against each other in a bizarre quest for ultra sophistication, the Japanese manufacturers have rediscovered the importance of making bikes that are both simple and affordable. Among the latest on the scene is the Yamaha Seca, which went on the market at the end of 1991 at a seemingly unbeatable price.


Omitting the Frills

About 30 percent less expensive than rival 600cc four-cylinder "Super Sport" bikes, the Seca II (named Diversion for Europe) is still not a cheapskate machine. It just omits unnecessary features and complex technology. There is no integral fairing, no cast- aluminum frame, no liquid cooling, no multivalve head. That doesn't prevent the Seca from being up-to-date with an entirely new power unit, forward- inclined in a modem tubular frame to improve the weight distribution.


A Multipurpose Road Bike

Even though its maximum speed is a perfectly respectable 120 mph or so, the Seca is not predominantly an out-and-out performance machine. It is basically a highly practical bike that calls for a minimum of maintenance, is light and easy to handle, and just as comfortable two-up as solo. It happily meets its design parameters in being that rare animal - a multi-purpose road machine. Its styling is just right for its function, sporting without being aggressive, modern without aping racing bikes or copying the classics of the past.



Engine: 598cc (58.5x55.7mm) four-cylinder four-stroke

Power output: 61 hp @ 8500 rpm

Valves: twin overhead camshafts, 2 valves per cylinder

Fuel system quadruple carburetors

Transmission: 6-speed gearbox: chain final drive

Suspension: (front) telescopic fork; (rear) swinging fork with single damper

Brakes: (front) disc; (rear) disc

Wheels: cast alloy; (front) 110/80x17 in; (rear) 130/70x18 in

Weight: 400 lb.

Maximum speed 118 mph


Reasonably priced and endowed with outstanding qualities, the Yamaha Seca represents a new beginning for simple, all-purpose motorbikes.”


Le fichier Moto Passion réalisé par François-Marie Dumas réunit près de deux mille photos accompagnées d'un historique très complet des machines présentées.
Il sera progressivement mis à jour ici et toute information complémentaire est la bienvenue sur info@moto-collection.org.

Cette documentation unique, qui constitue sans doute l'encyclopédie la plus exhaustive jamais écrite sur l'histoire de la moto, a été réalisée avec l'assistance de nombreux spécialistes dont principalement Didier Ganneau, Christophe Gaime, Mick Woollett, Jean Goyard, Bernard Salvat, Christian Rey, Yves Campion, Helmut Krackowizer, Michael Dregni, Michel Montange, etc. que je remercie ici.

Disponible sur demande :
- Les fiches originales sur papier
- Les photos et archives signées de mon nom en haute définition ou les documents originaux.
Me contacter sur info@moto-collection.org pour les conditions et droits d'utilisation.