Still on a 103-inch wheelbase, the 1925 Chevrolet Series K carried an nicely modified version of Chevy's familiar 171-cubic-inch four-cylinder engine. It developed 26 horsepower, and a single dry plate clutch replaced the obsolete cone clutch. Chevy engineers also replaced the car's quarter-elliptic rear springs with modern semi-elliptic units.
Chevrolet axles had always been notoriously weak, and customers knew it. So a new semi-floating rear axle with one-piece "banjo" casing was installed. It was borrowed from the abandoned Copper-Cooled model. Brakes were new 11-inch-diameter pieces, but still operated only on the rear wheels.
Finished with Duco paint in different colors depending on model, Series K bodies were a little roomier than those of the Series F. Five body styles went on sale: roadster, touring, coupe, coach, and sedan.
The Series K Superior touring car cost $525, versus a mere $290 for a Ford Model T.
To counter that difference, Chevrolet promoted the idea that its cars really were "Superior," well worth the extra dollars. Touring cars and roadsters wore wood-spoke wheels. Coupes and sedans got steel-disc wheels with 29x4.40 balloon tires, for a lower look.
With the introduction of the Superior, sales rose nearly 70 percent. Chevrolet now sat firmly in the number two spot in U.S. auto sales, behind Ford and ahead of Hudson.
1925 Chevrolet Series K Superior Facts
| Model|| Weight range (lbs.)|| Price range (new)|| Number built|
| Series K||1,690-2,070|| $525-$825||519,229|
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